They strip and oil about an hour before league. Lanes are available for open bowling after oiling, but since we have 8 lanes not used for league only very rarely do the league lanes get use before league.
About once a week they hand strip the pin decks and maybe once a month (maybe every 3d week?) they double strip the last 20 feet - makes for an interesting shot.
What I'm terribly happy about is that, some 6 months after the old lane guy left, they finally figured out how to clean the approaches and apply conditioner so you can actually slide again. I thank them, my back thanks them, my backside thanks them (I don't land on it anymore now) and my knees thank them.
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"I do desire that we may be better strangers." Willie the Shake, As You Like it(III,ii)
"Life robs us of more than death does."