A day when a lot of people cook animal protein on outdoor fires almost demands a caveman play on the mandatory-pay Pimlico Rainbow 6, doesn't it? I'm just burning the nuance up and going equal weights in a bet with a $250K-plus carryover (and a lot more money coming in) that has a 20-cent minimum and starts in race 4.
The sequence for me goes very much wide to narrow, and my first impulse was to use "all" in the first leg. Sticking with just four there and should I get lucky enough to make it to leg 6 there will be a chance for some hedging with a single to finish things off. Good luck with your plays!
Race 4: 1,2,3,6
Race 5: 4,5,7,10
Race 6: 2,4,6
Race 7: 3,4,5
Race 8: 4,6
Race 9: 12