Here is an interesting way of selectively betting top weighted horses in handicaps.

1. This betting system operates on metropolitan meetings in Sydney, Melbourne, Brisbane and Adelaide on Saturdays.

2. The horse must be top weight in a handicap. So eliminate weight for age races, classic races, set weight races and set weight with penalties races.

3. The horse must have won over the track and distance.

4. It must have finished 1st, 2nd, 3rd, or 4th. at its last run within the last 28 days.

That's it.

I checked last Saturday's Doomben races.

There were two bets:

Spot The Diff 1st. $2.35
Casual Choice 1st. $7.00