I would guess that there was some type of damage to that one side of that one hull
, perhaps only dock
scrapings but SOMETHING that the PO felt was either unsightly or in need or other repair.
It would be normal and conventional to just repair and repaint one side of one hull
, since that's going to cost less than 1/4 of repainting the whole boat and, if there was any insurance
involved, they may have only gone for the side that needed work. If you've got a big budget
and high standards, by all means, paint
it all now. ("If".<G>)
And I don't see any reason to repaint the whole boat if all that needs work is one side of one hull. It should be possible to get a damn near invisible color/shine match, if the others still have gloss, or if you can compound/polish them back into the same shape.
More important would be that you now have to sand off all the "wrong" coating to get down to a clean base, and then explore your options. From what I've heard and seen, once you paint
you must ALWAYS REPAINT. It may take ten years, but any "coating" will wear eventually and need recoating. Of course, if you don't protect gel coat it will chalk and decay too.
The coating makers dance around with words and say the coatings don't need any waxing, or shouldn't be waxed, or should only be "protected" with their special products (which are wax or polish in simple English) but I'd look at just finding out what's wrong with that one side, and just fixing that one side. See what you've got under the alligators, what the base material is, and then get some quotes on new coatings. I think you'll find new gelcoat
so much more expensive that it isn't worth doing, the "coatings" are pretty good these days.
Ten years from now...then you can repaint the whole thing.<G>