Paint looks great?
If its been painted, I'd want to know exactly what all has been done to the boat, specifics, and how.
A 1979 fish and ski was originally finished in gelcoat, are you sure its not gelcoat? A fiberglass resin product, not paint? Even if its metal flake, it was still originally gelcoat.
Google 1979 Bomber fish and ski and hit the images tab. Does it look like the boats that show up?
If it has been painted, I'd bet the interior has seen some work too. If there are hatches in the deck (floor) or fold out seats, open them and examine the interior spaces very carefully. Actually put your hands every where you can, but esp into places you cant see into. If you have to put a camera or cellphone below/into areas you cant see and shoot pix.
A running motor on a good condition boat w a towable trailer might have an extremely different 'value'' to me in WV then it would in any other place.
Condition is nearly everything, so post some pix, or a link to the ad, but putting hands on it is a much better judge of 'worth' then age or brand. After condition, confirm it has whatever paper trail your state requires, BillOfSale, Registration, title.
Some use Nada for value, but that can be inaccurate
Good luck and welcome to iboats