There are alot of trailers out there that just use two rollers on each hull, I do like cradles, but they are kinda expensive. you can get them from
www.murrays.com You can probably make them too. The boat looks sharp in the picture, I really suspect you are getting a good deal. I just looked at the picture of the trailer, one thing that you will want to pickk up0 I think is a mast craddle. This attaches to your rear beam and supports the back of the mast, without bending your tiller crosspiece, or your tramp. The way it is now, I would take some towels to wrap around the end of the mast for your drive home. When are you planning on picking it up?