I'm looking at a 13 foot Boston Whaler as a second/auxilary boat. Went to look at it yesterday and got a question. It's a 1968 sport model but it's got a number of spider cracks in the gelcoat in the sole and sort of fishscale looking cracks along the gunwale. I realize it's a 1968 model but the price is right, should I be concerned about the cracks?