Each BATTLE SCAR has a story I'm sure and that's why I LOVE ALLOY but, Kevins advice above is on the money, be prepared to get some major arm pump running a drum sander.
Don't forget pictures, before and after.
Are all of the thru hulls good, Bilge pump/hoses good, wash down pickup and hoses?
How much water are we talking GALLONS or just wet like from condensation?
2 is 1 and 1 is none.
and for the slow troll you may need to run a 10/15 HP kicker.
If I did the kicker it would run on it's own fuel tank with fuel bought at different station.
Looks like it was last registered in Colorado [ CL 1125 AH ] can you do a lost title search there?
Or go to the PD or Game and Fish with the numbers and have them run it because your thinking about buying it