Making a 60ft flat level surface is harder than you'd think, and even with your human pin setters a lane would effectively allow 1 or 2 people to practice at a

Making a 60ft flat level surface is harder than you'd think, and even with your human pin setters a lane would effectively allow 1 or 2 people to practice at a time. Plus, as another poster pointed out, I think several other sports would be rejected for the same concerns if they weren't effectively grandfathered in.