Beautiful NY State Park with incredibly clear lakes.
We came specifically to kayak and had a really nice time. The prices for rentals were reasonable - we paid $10 an hour for single person kayaks and paddled around the whole lake. You are not allowed to bring in your own kayaks; to keep lake from any outside contaminants that might come in on personal watercraft.
We had been to Green Lakes before to hike but really enjoyed our time on the water. It was very relaxing and the water is amazingly clear. Highly recommend as a place to visit and if the weather cooperates - try kayaking!