What type of 20 SF

[Bushwacker]

With that aluminum rub rail, and that vintage Evinrude, I'd bet it's an early Potter, maybe a '72 or earlier 4-stringer version. Scuppers going straight down thru the floor would be another indicator of a Potter model. Not sure what SeaCraft Industries did with scuppers but I think Tracker models ran 'em out the transom. I notice the solid inner liner has been cut out to add rod holders. That will substantially weaken the hull, but maybe no big deal if you're gonna clear the forest and rebuild it anyway!