That's the only one I got and im honestly not sure about the wood.
Fat fingered from the phone-Corey
Well, this is a huge job for starters.
If it is backed by plywood, you would be better served to remove the wood in the areas of the repair and laminate in a new section. Then you would need to build up new fiberglass after fairing the edges....
If no wood and only glass, I would recommend making some flat pieces of Formica covered wood and spray it down with some PVA mold release and attach it to the outside of the transom after it has been faired and make the repairs from the inside... (much less sanding)..Then you could use some polyester filler primer and block it out flat...
I guess it depends on how bad you want them fixed...

GT