Registered Forum User
Big Twin
Posts: 1,956
Join Date: Mar 2005
Location: Normally in my own little world
Mood: I own a flame thrower
Two ways that I know of.
Most car shops will now sell glass fibre matting and cold cure two part resin. Wet lay the glass fibre matting on the back of the crack / damage and make sure there is plenty of overlap so as to reinforce the damaged area. On the front side use the resin to fill the damage and sand it back, if the crack is too large then fill with normal car filler. All ready for painting.
Alternative is to find a local manufacturer of glass fibre components, not necessarily fairings, and offer them some beer money to sort it out for you.