Gunny,

Higher strike rates produce lower runs of outs.

I'm no maths. junkie but I do know that a 50% SR is exposed to a potential 10 outs.
I shudder to think what potential run of outs your 17/20% SR is exposed to.

The common average goal most experienced punters seem to aim for is a profit from 1 in 3 or at most 1 in 4 whose potential run of outs arn't too frightening.

Most punters seem to start wide but over the years [eventualy anyway] head toward the shorter prices were most of the winners are. It took me 25yrs. and I would love to be able to start again !

Cheers.