Be careful what you ask for. That 30 ft abandoned sailboat may have liens and liabilities you may not want to deal with - especially after a collision with the 50 footer.
Salvaging is not worth the risks - IMHO. Unless there is nowhere else to go, or you have responsibilities off that cove's shore, weigh anchor and move on - this is not your fight.
True Blue . . .
sold the Nauticat