Used Kevlar because the bottom around here is rough rocks mixed in with mud.
Feathered the trailing edge of the rudder. Sanded down all the filled screw holes from the lamination. Taped down plastic, then smoothed the Kevlar/carbon fabric, duct tape and stapled it to stretch it real smooth. Poured epoxy on, squeegeed it to the edges, then taped on Saran Wrap tight.
Pretty good shine for plastic wrap and no vacuum bag.