Adam said
"Potential issue with tobogganing is that actual top of some of these hills is pretty small and depending on natural flow of people doing the downs and ups you sometimes end up with good-sized clusters at the top of folks that didn't necessarily come as or intend to be "groups." Not sure how enforceable, but be nice if there was some kind of spaced lineup system with max number at the top at any given point in time.
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The gathering at the top shouldn’t matter. They tell us we can shop in aisles that don’t allow 6 feet as long as we mask and sanitize.
Everyone at the hill should still be fallowing the masking rules.
As for pile ups at the bottom. Time your entry points to prevent that.