shortest I've ever bowled on was probably 25ft.. back in 92/93 using my old urethane purple hammer and the ball was hooking so much it was sick.... and this was before i knew speed control and how to actually hook the ball consistently..
Besides that, the old bowling alley i usta bowl at would do a HUGE 9pin tourny 1500$ first place prize and it was handicapped.. Enter as many times as you like. The catch!! it was on a sport shot. first yr was a complete reverse block, a light amount of oil in the middle and going down board 10, caused your ball to hit the 6pin. hitting 11, and you might stay in the pocket...50ft oil pattern.
Next yr, 30ft flat oil pattern.... talk about seeing a reactive take a left turn into the gutter... bad part of both years, I had issues breaking 400!!!!! Finally i just grabbed a old ball polished it up and launched it at the 1-3 pocket and still only shot 650 lol.
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