Self-bailing...that means you don't have to scoop (bail) the water out of the top side or deck of your boat. However, It does not mean that your boat will not hold water inside the hull and/or out of site. Some pedal boats have both a self-bailing deck and sealed or foam-filled pontoons, which is the best way to go. So, if you are a commercial business, or simply want to tie one off to the dock, a self-bailing and sealed or foam-filled pontoon boat is the recommended way to go. If you're an individual, an entry-level, self-bailing boat is nicer and has far less maintenance than a boat without a self-bailing deck.