I think it depends on two things.....The drilling....."How much hand" you have.
I used to have a Trauma Recovery and for me it would work only on light to medium-light oil. On medium oil, it would over run the breakpoint. Also did not handle carry-down well.....However, there are a couple of things to consider here as mentioned above.
First, the drilling...Mine was Drilled Pin over ring-finger and touching the edge of bridge with CG kicked out 1 1/2".
Second, I "don't have much hand." I have very low revs so I am told that I need help getting mid-lane revs and this drilling gives too much length for a low rev bowler. Had I drilled it Pin under ring finger and CG out, this ball might have performed for me on medium oil, I don't know.
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Retired and bowling on
Fixed Income