Bhagwan, ok so here is the result of the Target thing (by the way can you download that or not?)
A bit longwinded to do 4 years results so I took the worst set of results with a run of 16 bets between divies of at least $2, with 14 divies from 16 with less than $2, some at less than $1 (as selections are bracketed and counted as one bet)
LEVEL STAKES = LOT of 19.5% (ouch)

Targeting $10 per race with a fixed Divisor of $2 (which is the Ave. divi) $1000 max bank.

Result= PROFIT of $448, = 5.8% POT, in theory sounds great, BUT at bet 15 there was $931 outstanding, next bet = $1081 which won and saved the bacon. NOW, I emphasise that this was the WORST set of 16 bets in 4 years, but my prognosis is .......... TOO HAIRY FOR ME.

Could be though ,that using a greater divisor may reduce the bets to an acceptable level, although it will take longer to reach the target as ..say... if we were using a divisor of 3, we obviously need a Divi of $3 to reach the target, which happens of course but longer droughts.

I'll repeat the excercise using the "cruncher" and see what happens.