Nice job sailingdog - that would work very well. But, Earl may just find that by simply screwing the SS mounting brackets, that come with each ladder, to his Tartan 34C teak toe rail, it will be less expensive and easier than mounting to (2) track cars.
Each top end of the gooseneck ladder tubing has a round head SS bolt which is unscrewed just enough to insert into keyed slots on the brackets. We find the brackets to be well made, attractive and of a low profile. Additionally, the hinged stand-offs are extra long and can be cut to adapt to his boat's hull profile.
It's also possible that his Genoa tracks are set in too far from the gunnels to clear the toe rail. He will need to consider all options for the best approach.