well. if he's in his 50's and still throwing 20 mph. he must have good knees. this ball will hook on its own no matter what drill you put on it.
does he want it to go long, and then snap- or go early and have a continious roll?
my layout was used to go longer and have s huge backend to the pin deck.
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ÈĻ Arsen
èl
Track Mean Machine (Heavy)
Lane #1 Dirty Bomb (Heavy-Medium)
Track Machine (Medium)
Lanemasters The Buzz (Medium)
Columbia Wicked B/R/T (Medium-Light)
Track Desert Heat (Light)
I throw it all, just give me a ball, I'll throw it. =]