Not salvage...Even if it was, salvage gives the salvor right to a portion of the vessels value, and never conveys title in and of its self. If this vessel met the conditions for salvage, which it doesn't, you could place a lein on the title. A mechanics lein will do the trick. If you were to simply, take possession of the boat it would be theft.
1. if the boat is docked or at anchor
and afloat; it's not salvage.
2. If the vessel were adrift, and there was no crew; that would be salvage.
3. If the vessel was beached on private property, unless it is your property, you would not have a salvage claim either.
Leaving boat anchored on Lake Monroe. Yes, you can leave it there provided it is not in the navigable waterway (between markers), not a hazard to navigation
and registered, there is not alot the local police or governement can do about it.