Catamaran trailers are designed to support two separate hulls instead of a single hull. Built-Rite catamaran trailers are custom-built with precise hull spacing, reinforced crossmembers, and balanced weight distribution to properly support each hull and ensure safe transport.d lightweight strength. Unlike many competitors who weld frames, Built-Rite drills and fastens components with stainless steel hardware, which improves durability and makes maintenance easier. Their trailers also use V-shaped bent crossmembers and torsion axles for better weight distribution and towing stability — a big plus for smooth, reliable hauling.