RE: Whats the process to salvage a partially sunken boat?
There are maritime laws which apply. I have no idea about a lake. I do know that in coastal waters you file some document, then you have the right of salvage. I read an article once about a famous sailboat /yacht that sank near here, someone (a father and his sons) salvaged it, spent ~$200,000 on salvage and re-fitting it and had a boat worth about $275,000.