Three bets per Saturday,eh?
Arrange bets into Chronological order, bet 10.15, 25.
Sop at a winner. If your fist bet wins carrying your ten units, take your profits
and fold your tent for the day.
If your first bet loses bet 15 on the second selection, if that loses also.bet 25
on the third and last bet for the day.
If it wins at evens you have your money back,if better than evens you have made a profit.
If the third one loses, wait till next week, do not chase losses,If you can pick
25% winners at reasonable odds you stand a good chance of getting your nose in front.

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Life is simple. People complicate it.