Those are pretty severe stress fractures. They won't go away unless they are ground out and glassed over. Look how the fractures go right through the molded in skid. If you want a beater boat for cheap
then go for it, but this boat will never look good without a ton of work. If the price
reflects that it may still be worth going for it, but doing it right is a big job. You can't just die grind them and fill with epoxy
, they'll come back every time. If there are fractures like this everywhere it's probably because the factory gel was sprayed much too thick, but the examples in the pic look like they go well into the glass to me. Either way they are big enough to require serious grinding to remove.