Used a chain fall connected to a long piece of wood that spanned 4 joists in the ceiling. That hooked to the back of the boat. On the back of the boat at the transom I cut a square hole thru the area where the cut out for the lower unit would be. Secured a 4x4x8ft long thru the transom with a piece of plywood and 2x4 secured to the floor.
And a come a long on the front thru the bow eye.