I bought a blast for my son. The boat is advertised as unsinkable. The boat flipped over on the first day of use. It then bobbed a few times and sunk to the bottom of the lake before I was able to get to it. The "engineers" at traxxas told me this was not possible and have since accused me in writing and on the phone of intentionally sinking the boat. Maybe the boat was defective? I dont know,yet beware of using it in an area that you cannot retrieve it if it sinks. I am shocked at the attitude of this company and the baseless denials and accusations. Has this happened to anyone else? Just FYI.