Head to Discovery Green and rent RC model sailboats from Bayou City Adventures to sail around the lake. The cost is $5 for 15 minutes of sailing and an afternoons worth of fun just watching others sail. You are not allowed to get in the water so if your boat gets into trouble, ask an attendant and they will retrieve the boat. No reservations required. Boat rentals are available every day from 11:00 a.m. to 7:00 p.m. through the summer.