If boat is on the hard in a location where breaking it down is not an issue, and you have the time & interest, I would start by quantifying what you have to determine actual scrap value vs. a viable hull for resale if still in good condition. I would guess a boat that size has a keel weight of 8000# or more, and actual lift weight minus interior may differ greatly from displacement tonnage so do an estimate of ft2 of aluminum x weight/ft2 of hull thickness. Some aluminum will have attachments (dirty Al/Al breakage), some will be clean (likely old sheet) - estimate each and get prices/lb. to get an estimated value. Separating the keel and extracting the lead would be my first move, then cutting the hull into as few pieces as possible to allow transport with a bare minimum gut job on the interior. I've done a bunch of boats, a few of which were aluminum up to 25' (riveted not welded) and would be glad to give you pointers if needed.
Or just invite me down to do it - FL looks a lot more fun than WI does right now!