Paul, yes by cut off point I mean say you are prepared to follow each horse 5 times (or whatever) I mean stick it out to the last bet.
Or if target betting then you decide what is the maximum amount you are prepared to lose on any one horse trying to win a given amount, and again stick to that right up to the last bet.

I say this cos, if you chicken out as soon as there's a bit of heat, you will never get those spectacular wins. (better than any drug I've heard of)

One thing you might look at is that, a lot of horses seem to win at about the same time (of year) as last year .