Well filtration of signals are hard job. You never know withc one is right!
I relay on my expiriance and on fundamental analyses too.
If I gain 15 - 20 pips I do not reentering in same direction, I wait for clean shot! So I trade on 3 pairs at the same time.
I use lot size that is in corelation with thousends of dolars that I have on my account. If I have 5K I use 0.5 lot size if 6K - 0.6 lot size... 10K - 1.0 Lot size.
I use sl between 35 to 50 pips but now in this time I can leve Long trades for more because I think that this is a bottom price of the euro it must come stonger. Everu Long trade on this days must be winner.
Exit from trade is always TP. I use 10 to 40 pips for TP, as I recognize situation on market.