I have a Veneitan rowing boat, a sandolo. It is 19 feet long, 3 feet 9
inches beam and weighs around 300 pounds. I keep it in a boathouse and
roll it in the water on a Sietech dolly. Once in a while I would like
to trialer the boat. I have checked out trailers and those available
are not suitable. Does anybody have a source on how to build a trailer?