It is better to do a bunch of light resurfacing, but if you bowl a lot you are going to want to get the oil out of the ball(s) as well. At our pro shop we reccomend to do this every 60-75 games, and to do a complete bake and resurface at least once a year.
But then again, if your bowling a lot you are probably getting new equipment more than once every year so the amount of games you actually put on a ball could be less
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Dale Williams
Columbia 300 Utah Amateur Staff