I have a great condition trailer which can hold up to 4 lasers, or 8 optis, or even a bunch of DN's on the way out west. It was made by Triad Trailers. I replaced the hubs and tires when I rejuvenated it a few years ago. The 6 inch tubes can hold the spars, with additional room on the tube hooks. The hooks could probably accommodate 8 inch tubes. The plywood "floor" makes loading the top laser easy. 15" tires make the ride smooth. It needs nothing; just more people using it.