I have a mix of systems with a polyester ball and my strike ball. Spare balls are the way to go......
For 4, 6, 7, 10 pin combo leaves I use the 3rd arrow system. Basically, I go cross lane.
With buckets, 3 6 10, baby splits, and wash outs I play straight up 1 to 1 using the key pin.
2 3 5 pin leaves I adjust from my strike line.
I have to say though, not flattening my wrist for spares - like I once did before, did make a significant difference on right side pin leaves. mainly the 10 pin. My spare ball hooks, even with my speed at 17.5 average, my spare ball with a core moves. I am 39 of 46 on 10 pins missing 7 this first half.
I went away from the breaking of my wrist due to the fact that I go through thumb hole repairs often. I still "thump" over my thumb hole down the lane, but not as bad as going end over end.