Or flotation either, I know it sucks to tape the boat each time, but I always do it, and have had a flipped boat float all the way across the pond, which took almost 1/2 an hour, the boat had barely a teaspoon of water in it. I guess if I crashed it into something hard enough to break the boat into multiple pieces, flotation would help, but as it stands, if no water can enter the boat, it will not sink.