I think you may have misunderstood UB, the odds (based on NSW TAB prices) are already considered/calculated which is how they come up with profit or loss data (see "performance" tab for any tipster). I was talking about 15% Loss on Turnover, not 15% win strike rate.

I assume that if a tipster is consistently tipping at a yearly LOT of 15% at NSW TAB odds, that you could lay his picks with a staking plan and make a profit???

...and if you could then add a couple of filters by looking at his last 5 months results and seeing where he is least successful (state of track, specific tracks, distance range etc..???).