Re: My son's first 'car'...
Congratulations to your son! I remember my first boat. It was given to my father by a friend who purchased a new boat. The owner of that boat said that the purchaser HAD to take it as a condition of the sale. It was a sailfish type. The deck-hull joint leaked and the foam filler had expanded to crack the hull. The daggerboard trunk was constricted by the foam. There was no Daggerboard. The sail was a Sabot sail and mast.
I had to design a new daggerboard and cut a hole that was big enough for the new board to fit. I had to glass over the hull crack. I had to restich the sail is places. I also had NO money so this was done with second hand materials.
I sailed that boat for a year until it was stolen from the dinghy racks at the marina. It may not have been very seaworthy, but it was a heck of a lot of fun.