Maybe you could make the wind stop so there's even less waves, and make sure there are just enough clouds to give nice shade, but no rain. Definitely no rain. And temperatures between 70-75, no colder or warmer, that would ruin the whole thing. And there must not be too much pollen in the air because that would irritate the hay fever.
While we're at it, let's find a clearer, larger, more inviting place to run in general.
Come on already! We got it so good there and there's still complaining? How about instead of a few waves making your boat bob up and down, there was a one onch layer of algae and muck that won't wash off of your boat, like at most ponds in the summer. And when you go under yoour boat disapears in the mucky bottom, never to be seen again.