Quite a satisfying thing, building a trailer. Unless you are doing it in a shed, in Jan/Feb 40 deg plus heat, with the door facing the wrong way to catch the breeze. Which is how I did it. Anyway, mine came out well, had it gal'd, for around half the price of buying new, and mine was stronger. There's a lot more work in them than people think.
When I bought the new boat, someone asked me why I didn't build the trailer for it. I told them to F*** off.