diff --git a/robocom-zero.cabal b/robocom-zero.cabal
index 94acfd3..749bc5c 100644
--- a/robocom-zero.cabal
+++ b/robocom-zero.cabal
@@ -66,6 +66,7 @@ library
                      , hedis
                      , gitrev
                      , data-default
+                     , template-haskell
 
   default-language:    Haskell2010
   other-modules:       ATrade.Exceptions
diff --git a/src/ATrade/Driver/Backtest.hs b/src/ATrade/Driver/Backtest.hs
index e4c94c5..46a8350 100644
--- a/src/ATrade/Driver/Backtest.hs
+++ b/src/ATrade/Driver/Backtest.hs
@@ -44,6 +44,7 @@ import qualified Data.Sequence            as Seq
 import           Data.STRef               (newSTRef, readSTRef, writeSTRef)
 import qualified Data.Text                as T
 import           Data.Text.IO             (putStrLn)
+import qualified Data.Text.Lazy           as TL
 import           Data.Time.Calendar       (fromGregorian)
 import           Data.Time.Clock          (DiffTime, UTCTime (..))
 import           Data.Vector              ((!), (!?), (//))
@@ -314,7 +315,7 @@ instance MonadRobot (BacktestingMonad c s) c s where
       xs -> do
         mapM_ (\o -> pendingEvents %= (\s -> s |> (OrderUpdate (orderId o) Cancelled))) xs
         pendingOrders .= otherOrders
-  appendToLog txt = logs %= ((:) txt)
+  appendToLog txt = logs %= ((:) (TL.toStrict txt))
   setupTimer time = pendingTimers %= ((:) time)
   enqueueIOAction _actionId _action = error "Backtesting io actions is not supported"
   getConfig = use robotParams
diff --git a/src/ATrade/Driver/Real.hs b/src/ATrade/Driver/Real.hs
index 7924988..8fcc815 100644
--- a/src/ATrade/Driver/Real.hs
+++ b/src/ATrade/Driver/Real.hs
@@ -47,6 +47,7 @@ import qualified Data.Map                              as M
 import           Data.Maybe
 import qualified Data.Text                             as T
 import           Data.Text.Encoding
+import qualified Data.Text.Lazy                        as TL
 import           Data.Time.Calendar
 import           Data.Time.Clock
 import           Data.Time.Clock.POSIX
@@ -59,7 +60,6 @@ import           System.Log.Formatter
 import           System.Log.Handler                    (setFormatter)
 import           System.Log.Handler.Simple
 import           System.Log.Logger
-import           System.Random
 import           System.Signal
 import           System.ZMQ4                           hiding (Event (..))
 
@@ -141,7 +141,7 @@ instance MonadRobot (App historySource c s) c s where
     bc <- asks envBrokerChan
     lift $ BC.writeChan bc $ BrokerCancelOrder oId
 
-  appendToLog = lift . debugM "Strategy" . T.unpack
+  appendToLog = lift . debugM "Strategy" . T.unpack . TL.toStrict
   setupTimer t = do
     timers <- asks envTimers
     lift $ atomicModifyIORef' timers (\s -> (t : s, ()))
diff --git a/src/ATrade/Driver/Types.hs b/src/ATrade/Driver/Types.hs
index 2736a81..04e2a53 100644
--- a/src/ATrade/Driver/Types.hs
+++ b/src/ATrade/Driver/Types.hs
@@ -6,11 +6,9 @@ module ATrade.Driver.Types
   InitializationCallback
 ) where
 
-import           ATrade.RoboCom.Monad
 import           ATrade.RoboCom.Types
 
 import qualified Data.Text            as T
-import           Data.Time.Clock
 
 -- | Strategy instance params store few params which are common for all strategies
 data StrategyInstanceParams = StrategyInstanceParams {
diff --git a/src/ATrade/RoboCom/Monad.hs b/src/ATrade/RoboCom/Monad.hs
index 69a4769..b9cd3be 100644
--- a/src/ATrade/RoboCom/Monad.hs
+++ b/src/ATrade/RoboCom/Monad.hs
@@ -19,7 +19,8 @@ module ATrade.RoboCom.Monad (
   Event(..),
   MonadRobot(..),
   also,
-  t
+  t,
+  st
 ) where
 
 import           ATrade.RoboCom.Types
@@ -27,14 +28,16 @@ import           ATrade.Types
 
 import           Control.Lens
 import           Data.Aeson.Types
-import qualified Data.Text               as T
+import qualified Data.Text                 as T
+import qualified Data.Text.Lazy            as TL
 import           Data.Time.Clock
 import           Language.Haskell.Printf
+import           Language.Haskell.TH.Quote (QuasiQuoter)
 
 class (Monad m) => MonadRobot m c s | m -> c, m -> s where
   submitOrder :: Order -> m ()
   cancelOrder :: OrderId -> m ()
-  appendToLog :: T.Text -> m ()
+  appendToLog :: TL.Text -> m ()
   setupTimer :: UTCTime -> m ()
   enqueueIOAction :: Int -> IO Value -> m ()
   getConfig :: m c
@@ -46,6 +49,9 @@ class (Monad m) => MonadRobot m c s | m -> c, m -> s where
     setState (f oldState)
   getEnvironment :: m StrategyEnvironment
 
+st :: QuasiQuoter
+st = t
+
 type EventCallback c s = forall m . MonadRobot m c s => Event -> m ()
 
 data Event = NewBar Bar
diff --git a/src/ATrade/RoboCom/Positions.hs b/src/ATrade/RoboCom/Positions.hs
index a8afc27..7ddb711 100644
--- a/src/ATrade/RoboCom/Positions.hs
+++ b/src/ATrade/RoboCom/Positions.hs
@@ -207,49 +207,49 @@ dispatchPosition event pos = case posState pos of
           then
             if posBalance pos == 0
               then do
-                appendToLog $ TL.toStrict $ [t|"In PositionWaitingOpen: execution timeout: %?/%?"|] (posExecutionDeadline pos) lastTs
+                appendToLog $ [t|"In PositionWaitingOpen: execution timeout: %?/%?"|] (posExecutionDeadline pos) lastTs
                 cancelOrder $ orderId order
                 return $ pos { posState = PositionWaitingPendingCancellation, posNextState = Just PositionCancelled }
               else do
-                appendToLog $ TL.toStrict $ [t|Order executed (partially, %? / %?): %?|] (posBalance pos) (orderQuantity order) order
+                appendToLog $ [t|Order executed (partially, %? / %?): %?|] (posBalance pos) (orderQuantity order) order
                 return pos { posState = PositionOpen, posCurrentOrder = Nothing, posExecutionDeadline = Nothing, posEntryTime = Just lastTs}
           else case event of
             OrderUpdate oid newstate ->
               if oid == orderId order
                 then case newstate of
                   Cancelled -> do
-                    appendToLog $ TL.toStrict $ [t|Order cancelled in PositionWaitingOpen: balance %d, max %d|] (posBalance pos) (orderQuantity order)
+                    appendToLog $ [t|Order cancelled in PositionWaitingOpen: balance %d, max %d|] (posBalance pos) (orderQuantity order)
                     if posBalance pos /= 0
                       then return pos { posState = PositionOpen, posCurrentOrder = Nothing, posExecutionDeadline = Nothing, posEntryTime = Just lastTs}
                       else return pos { posState = PositionCancelled }
                   Executed -> do
-                    appendToLog $ TL.toStrict $ [t|Order executed: %?|] order
+                    appendToLog $ [t|Order executed: %?|] order
                     return pos { posState = PositionOpen, posCurrentOrder = Nothing, posExecutionDeadline = Nothing, posBalance = balanceForOrder order, posEntryTime = Just lastTs}
                   Rejected -> do
-                    appendToLog $ TL.toStrict $ [t|Order rejected: %?|] order
+                    appendToLog $ [t|Order rejected: %?|] order
                     return pos { posState = PositionCancelled, posCurrentOrder = Nothing, posExecutionDeadline = Nothing, posBalance = 0, posEntryTime = Nothing }
                   _ -> do
-                    appendToLog $ TL.toStrict $ [t|In PositionWaitingOpen: order state update: %?|] newstate
+                    appendToLog $ [t|In PositionWaitingOpen: order state update: %?|] newstate
                     return pos
                 else return pos -- Update for another position's order
             NewTrade trade -> do
-              appendToLog $ TL.toStrict $ [t|Order new trade: %?/%?|] order trade
+              appendToLog $ [t|Order new trade: %?/%?|] order trade
               return $ if tradeOrderId trade == orderId order
                 then pos { posBalance = if tradeOperation trade == Buy then posBalance pos + tradeQuantity trade else posBalance pos - tradeQuantity trade }
                 else pos
             _ -> return pos
         Nothing -> do
-          appendToLog $ TL.toStrict $ [t|W: No current order in PositionWaitingOpen state: %?|] pos
+          appendToLog $ [t|W: No current order in PositionWaitingOpen state: %?|] pos
           return pos
 
     handlePositionOpen = do
       lastTs <- view seLastTimestamp <$> getEnvironment
       if
         | orderDeadline (posSubmissionDeadline pos) lastTs -> do
-            appendToLog $ TL.toStrict $ [t|PositionId: %? : Missed submission deadline: %?, remaining in PositionOpen state|] (posId pos) (posSubmissionDeadline pos)
+            appendToLog $ [t|PositionId: %? : Missed submission deadline: %?, remaining in PositionOpen state|] (posId pos) (posSubmissionDeadline pos)
             return pos { posSubmissionDeadline = Nothing, posExecutionDeadline = Nothing }
         | orderDeadline (posExecutionDeadline pos) lastTs -> do
-            appendToLog $ TL.toStrict $ [t|PositionId: %? : Missed execution deadline: %?, remaining in PositionOpen state|] (posId pos) (posExecutionDeadline pos)
+            appendToLog $ [t|PositionId: %? : Missed execution deadline: %?, remaining in PositionOpen state|] (posId pos) (posExecutionDeadline pos)
             return pos { posExecutionDeadline = Nothing }
         | otherwise ->  case event of
           NewTick tick -> if
@@ -308,7 +308,7 @@ dispatchPosition event pos = case posState pos of
           case posCurrentOrder pos of
             Just order -> cancelOrder (orderId order)
             _          -> doNothing
-          appendToLog $ TL.toStrict $ [t|Was unable to close position, remaining balance: %?|] (posBalance pos)
+          appendToLog $ [t|Was unable to close position, remaining balance: %?|] (posBalance pos)
           return $ pos { posState = PositionOpen, posSubmissionDeadline = Nothing, posExecutionDeadline = Nothing } -- TODO call TimeoutHandler if present
         else case (event, posCurrentOrder pos) of
           (OrderUpdate oid newstate, Just order) ->
@@ -365,7 +365,7 @@ newPosition order account tickerId operation quantity submissionDeadline = do
   }
   modifyPositions (\p -> position : p)
   positions <- getPositions <$> getState
-  appendToLog $ TL.toStrict $ [t|All positions: %?|] positions
+  appendToLog $ [t|All positions: %?|] positions
   return position
 
 reapDeadPositions :: (StateHasPositions s) => EventCallback c s
@@ -510,7 +510,7 @@ enterAtLimitForTickerWithParams :: (StateHasPositions s, MonadRobot m c s) => Ti
 enterAtLimitForTickerWithParams tickerId timeToCancel account quantity signalId price operation = do
   lastTs <- view seLastTimestamp <$> getEnvironment
   submitOrder order
-  appendToLog $ TL.toStrict $ [t|enterAtLimit: %?, deadline: %?|] tickerId (timeToCancel `addUTCTime` lastTs)
+  appendToLog $ [t|enterAtLimit: %?, deadline: %?|] tickerId (timeToCancel `addUTCTime` lastTs)
   newPosition order account tickerId operation quantity 20 >>=
     modifyPosition (\p -> p { posExecutionDeadline = Just $ timeToCancel `addUTCTime` lastTs })
   where
@@ -580,7 +580,7 @@ exitAtLimit timeToCancel price position operationSignalName = do
     Just order -> cancelOrder (orderId order)
     Nothing    -> doNothing
   submitOrder (closeOrder inst)
-  appendToLog $ TL.toStrict $ [t|exitAtLimit: %?, deadline: %?|] (posTicker position) (timeToCancel `addUTCTime` lastTs)
+  appendToLog $ [t|exitAtLimit: %?, deadline: %?|] (posTicker position) (timeToCancel `addUTCTime` lastTs)
   modifyPosition (\pos ->
     pos { posCurrentOrder = Nothing,
       posState = PositionWaitingCloseSubmission (closeOrder inst),