PPS.. on another look it turns out with level stakes that i wouldnt have stopped on the losing meets. so the revised figures are as follows:

out = 129
in =114.8

so the handbrake either increases the pot or decreases the lot and improve the s/r.

figures with brake in place

32 meets @ max of 300 = 9600 (hypothetically)
seven losses at loss of 1526 (actual)
twenty five winners @ +2500
9600 = 10574
=110.14% ROI
Winner winner chicken dinner!