[Jeff_H]

JBanta is right. Assuming that the rudder post and internal structure is still in intact, it is not all that difficult to reskin a rudder with epoxy resin and fiberglass cloth. Essentially you either ground down a layer or so through the existing cloth or else peel off the existing cloth if it is delaminated and fair the core and then reglass. That is by far the easiest way to go if the existing rudder is still intact.

Jeff