The place strategy i'm betting which hits about 60-70% of the time I'm only betting 1.6% of bank and thats based on the maths Paul outlined in my thread and having a desire to have a max drawdown of 40%.

So for 10% of bank to be viable you'd have to be hitting a strike rate of probably 90%+ whilst being profitable and still be comfortable with a drawdown of 50% or more (rough guess)