What position sizing formula would give an edge to a 45 % plus hit rate system? There is a system with a 20 pip stop and 22 pip target , it give a 48.7 % hit rate .The average number of annual trades is 6,250 (5 per day *5 currencies/instruments) , There is random distribution of profits and losses.How can I increase lot sizes after losses? Start with 1 lot and increase it after 200 point draw down to 2 lots, and to 3 lots after a 400 pip draw down .After a good profitable run and an increase in hit rate to 60 % approximately, revert position size to 1 lot . Is it a good strategy?What are the problems? As an example 25 trades in one week were done on 1 instrument , the first 10 trades lost 200 pip (10*200), second 15 trades had 11 profits and 4 losses , net result is 102 pips nett profit.The original mm strategy would have produced a 38 pip loss, using single lots on all 25 trades.