Do they have paddleboard rentals?

Yes

Yes. I think its between 8-10/hr. And $30 a day. Just make sure they give you the correct paddle. I saw paddle boarders with kayak paddles.

Yes, they have paddle boards, canoes, kayaks, paddle boats, and rowboats. Don't remember the exact prices, but you can rent by the hour, half day, and whole day. The rates were reasonable as far as i could tell.

yes, also canoes, khakis and paddle boats too.