Slingshot will be close. PK17 vs. Superflex cover with similar cores.
I have to agree. as specialist in dry lanes balls, except for the Power Groove Dry/R which is all but unattainable these days, the Slingshot is THE mildest ball I have used in a good 10 years. Relative to every ball mentioned here so far, it has almost no backend. It is still available from many places and especially from EBay. Get anyone except the Red/Pink(purple) one; it uses a stronger coverstock than the PK 17 standard on all the others.
When you say no backend, do you mean the ball rolls into the pocket instead of overreacting to the backend? Do you have a favorite drilling for burnt lanes?
I mean it's very close to a urethane type of backend, compared to a resin-type of backend. Yes, I also mean it does not overreact, also in the same way as a urethane never overreacts.
I have no favorite drilling for this. you CANNOT drill every ball the same. For dry lanes it depends, for me, on how much differential the ball has because that determines the amount of hook and backend (in importance, after the bowler's release and the oil amount). For a ball like the Sllngshot, (and the Tropical Breeze) with their tiny differential, it makes
almost no difference how you drill it