A seat mounting assembly is provided for quick and easy attachment to a transverse bench-style seat of a fishing or Jon-type boat. The seat mounting assembly is quickly and easily attached to the bench-style seat such that the seat mounting assembly allows a seat attached thereto to slide longitudinally to the transverse bench seat. The unique interface of a seat base and a track of the seat mounting assembly helps ensure that the seat attached to the seat mounting assembly will not tip relative to the bench-style seat, while the low profile design of the seat mounting assembly helps keep the center of gravity of a boat to which the seat mounting assembly is installed substantially unchanged.