Hi All
The answer, to save any more straining of memories is Mitchell Bell.
He had 113 rides on Sat in Syd over the last 12 months for a POT of 35.0%
Second was Willie Pearson with 11 winners from the same number of rides for a POT of 32.2%
Third was J Ford with 27 winners from 234 rides for a POT of 22.8%

Seems rather interesting that the value is not with the top jocks, and good (?) apprentices figure well.

I have them all on a spreadsheet if anyone is interested.
Cheers