How about both . . Hook Again definitely works, I was pretty skeptical, but I was pleasantly surprised. I had 150-200 games on my Detonator (usually sanded it every 25-35), and it just was being too bland on the backends, so I threw it in there, and now it's back to just like new. A spinner would be a good idea because when combined with scotch brite pads, you'll be able to do a much more even, thorough job as well as keep the coverstock fresh.
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The weekly signature series, by Hamster.
I was bowling one of the higher average scratch bowlers in league a month or so ago who bowls with average speed and maybe 5 revs from 1st arrow. On one shot, he left a 9 pin. Walking back, he frowned and said, "Nobody that throws a fag ball should leave that pin."