Abstract: A boat loading structure includes a trailer having a pair of longitudinally extending side rails. A plurality of pairs of bar assemblies are mounted on the side rails, each bar assembly of each pair being mounted on respective side rails. The pairs of bar assemblies are mounted in a plane perpendicular to the longitudinally extending side rails. Each of the bar assemblies includes a base secured to one of the side rails. A vertical rod extends upwardly from the base. A spring interconnects the base and the vertical rod. A roller member is rotatably mounted on the other end of the vertical rod.