thanks for the feedback Mark, yes I was backing every runner where I could get fixed odds as far as 99%, but felt much more comfortable at around 97%. Now as I was only trialing this on Saturdays the number of races where I could get set was minimal, but I still love it.

I guess what you are saying is that if I can get say 2% on ave. backing every horse @fixed odds I will still end up in front even allowing for the times when deductions apply? whereas if I reduce the number of runners I will get stung over time is that right?