I find nothing more annoying than having a system which forces you to make decisions on a race by race basis

Yep Im with you on that one..Im not geared up for that type of betting...mental wise..I like to know well in advance as to which selections I have for the day. The chances of making errors can increase dramatically, while, the clock ticks down to the jump...

It gets back to finding something that suits one's own makeup. The above type is well suited to some people, although I would suggest that it would be a very small perecntage of punters...having the calmness and ability to handle "realtime" pressure.