Do they have different pools for this sort of thing, i have seen the effect an allup has on small win pools after a few wins.

Another option if you want to try the UK style say on 6 race if you had $200 to bet for the day divide this in to 60/40 split put 60% on the first race what ever the return add it to the 40% left over then divide the total 60/40 and repeat, if you get a loser just divide the remaining 40% in to a 60/40 split and start again.

This can be done over as little as 2 race or as many as you like.