That's a fair cop. To be honest, I'd never thought about doing it. (I do more than bowl.) But it would be a worthwhile thing. I'll talk to some folks around Canberra after Newcastle Cup and see if there's any interest.
The point I am making here is that as a rule of thumb, this is how most sane tournament directors would set it up.
Short oil = more friction = more room for hook required = outside shot.
Long oil = less friction = less room for hook required = inside shot.
There it is in a nutshell. Free of charge to all.
Trouble is we have short patterns with the shot inside 10 or recently a long, low volume pattern that played short where the shot is inside 20. This pretty much eliminates players with hand, as they can't consistently get skid to the right side of the headpin with any rotation. It's like playing the burn squad on tour from game one, only the backends give you wet/dry to boot. Yuk.