: ... on their website to apply a small patch of dynel wet out with
: graphite-filled epoxy. . . . I would also guess that leaving out the graphite powder would not compromise the system to any great degree.

The dynel should give some ding resistance, as would another layer or two or three or four . . . (stop me when it gets thick enough) of plain ol' fiberglass cloth.

There is a definite reaction between the graphite and epoxy resin which has been moted in several areas. The graphite apparently does make the epoxy quite a bit stiffer and tougher -- which means better ding resistance. there are also some reports that adding graphite to the wetted area of the hull will reduce water friction, but these have been countered by claims that the data are not conclusive.

A stripe or two of graphite filled epoxy might be all you need. There have been reports that scratches on the darker material are not as obvious as scratches on a white or clear finish.

PGJ