I'm a senior and bowl with many seniors older then myself. We bowl on a house shot and not an extremely easy shot, but fair, oil a little on the shorter side.
But some dasys we go in to practice and the lanes are extemely dry probalbly left over from the night before. Now for some of us older bowlers, probably some youngers one also, bowling on lanes that are dry, much more then we're use to, makes us try to relase the ball differently and with more velocity then what our bodies really want to do. So oiling twice a day is good payback to the bowlers that both practice and bowl league in the house.
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Nicanor (Ten On The Deck)