Are you done yet? It is a private boat. I do not take out paying customers. I reserve the right to expect my friends to dive in a safe manner that includes not running out of air. When one of my friends broke that rule, I told him he was no longer allowed to bring his pony because he does not use it as an emergency backup. Instead, he used it to extend his dives, surfacing with two empty tanks. I put a lot of time and money into my boat and will not risk losing it due to a lawsuit from anyone who can't dive in a manner I feel is safe. If you buy a boat, you can invite all your friends to board looking like a Christmas tree with gear hanging from every D-ring if you want.