If target betting (or progressive staking) one can lessen the effect of a losing run as follows: say you are betting race to race at each meeting, so instead count one days betting as 1 bet. eg. say progressive betting (top of my head) 1,3,5,5, 8,8, etc etc, so day one =1 unit /8 races =1/8 of a unit on each, say no profit for the day so day 2, = 3 units/8 races = 3/8 of a unit on each and so on, reverting back to the starting point after a win for the day.

Of course you still need a selection method that shows a level stakes profit or leave your cash in the bank.