Adjustable boat trailer

A boat trailer selectively adjustable to accommodate boats of varying size including an adjustable winch station selectively moveable along the longitudinal axis of the boat trailer and adjustable boat hull support bunks selectively moveable along the lateral axis of the boat trailer to accommodate boats of varying height, length and width, the adjustable winch station being mounted on a quick-release adjustable winch station positioning assembly comprising a guide means telescopingly disposed on longitudinal member of the boat trailer frame and an integral hand-operated stop means selectively between a first position whereby the adjustable winch station may be moved freely along the length of the longitudinal member and second position whereby said adjustable winch station is retained in a fixed position on the longitudinal member and the adjustable boat hull support bunks are mounted on a quick-release bunk positioning assemblies comprising a guide means telescopingly disposed on a lateral member of the boat trailer frame and an integral hand-operated stop means selectively movable between a first position whereby the adjustable boat hull support bunks may be moved freely along the length of the lateral member and a second position whereby said adjustable boat hull support bunks are retained in a fixed position on the lateral member.