Ray-
I'm not sure about AZ, but I know in CA if your boat sinks in a body of freshwater used for drinking, you must retrieve it, and if the state EPA (or whoever) feels that you polluted the water, get ready to pay some hefty freaking fines. It's not bad enough you lost the boat, but now you have to spend money to salvage something that is worthless. I'd be on the horn with the Marina, Fish & Game, everyone possible first thing Monday, trust me you don't want them to salvage it for you and bill you.