Oh - that looks like fun! Hard work, though. Water bottle might be necessary. The lake water sure isn't drinkable. They've closed a lot of the beaches on the Wisconsin side of the lake.
Yeah, he's not about to drink it. He actually rode from our house (about 4 miles away), then rode up and down the beach a bit, then we put his bike on the car for the trip home. He's gotta to take things apart a bit to clean all the sand out, now.