If you don’t already have a swim platform/marlin board one can generally be installed directly to the stern, by a competent shipwright or boat builder.

To install a PrestoMarine Fixed system lift on an existing platform you need a platform with at least a depth of 600mm (see Image 1 below). The optimum length of a Rail system is determined by the maximum depth of the platform.

Also, the top of the platform must be less than 550 mm above the waterline (see Image 2 below).