I don't have a data base, Michaelg, but I did choose five Saturdays over the past few months: 14 March, 18 April, 25 April, 2 May and 9 May, and did them manually. Overall POT for a place (Sportsbet best price) was just over 4 per cent. I did not use your filter of place strike rate of 30% +, so may have been better.
4 per cent is not great, but may indicate this is a good general filter for 100 pointers. Other filters may be able to lift the POT.