These wagers seldom make it to the OTBs and Internet Wagering programs.
Very funny(or not) the time I focused a day on the grandSlam wager, walked into the NY OTB and the teller thought I wanted baseball on one of the TVs
This will definitely favor those willing to invest a lot. Without thinking too hard on this , I would guess a good strategy would be similar to a superfecta with more reliance on using 2 horse keys. That is 2 horses that you expect to both hit the top 5, and then shifting them around in different slots on your multiple wagers.
My guess would be that initially there will be some huge payoffs and carryovers, and then the sharks will circle in and start taking them down in greater numbers.
Will post some selections if I get a chance.