Re: John Boat Trailer
As others have said, Harbor Freight has some pretty cheap trailers that you can modify to work. Attached is a picture of the one I built. I bought the 4 x 8 trailer from HF, used most of it. I added my own tounge, winch stand, bunks, and extended the fenders (purely for looks). I also welded the HF frame together because it was like a wet noodle after I bolted it together. The trailer was $250 and I had about $50 in extra materials/paint into it.