Having a wee go at a Saturday only place system, I'm going to use a 3 block staking system, adding any losses to the target of 3, betting all horses at once:

Caulfield
5-4 Shamal Wind $1.48
9-6 Speediness $2.65, 14 Mutual Trust $9.5 - $2.07 (Dutch)

Randwick
8-10 Queenstown $2.4

Doomben
4-5 Vacallo $1.51

__________________
The Schmile

"I buy when other people are selling.”
― J. Paul Getty