I found a beach!
I was exploring the area around Madison today, and by "exploring" I mean flying around.
I found a ginormous lake with a beach. And I mean ginormous. Like the size of one of the Great Lakes, so big that you can't see the other side from the shore. The beach is also enormous, deep and wide. I may have to look into building a cabin out there.
It's about an hour (at highway speeds) east of Madison.