Thanks for the compliments, everybody!
I'm still a moderator on Speedwake, too. Jeff and Karen are very close friends of mine. I don't see any problem with helping out here in the tech section, too. I'm just trying to help.
Offshore Ginger, your method is probably the best, I'll admit. There are several ways that would be appropriate to this repair. This isn't really a traffic area or a structural integrity issue, so I wouldn't worry too much about the true strength of this repair. Granted, it is on a corner where it may get stepped on inadvertantly, which is probably how the damage occurred in the first place. It was probably also laid up too thinly in the mold, also. So the combination resulted in what you see here.
As long as the cracks have been dremeled or routered out into virgin territory, and there has been a sufficient aggressive grit applied to the repair surface area, any of these methods will probaby be sufficient.
I like to advise people that are trying to do their own repairs by using materials that they are familiar with and are readily available and inexpensive. I always worry when a person has to start buying the minimal amounts of repair items and is only going to use a teaspoon of bondo or 3 square inches of matte. They have to buy a whole blanket of matte and a quart of resin, etc. By the time they are finished, they've spent $200 on a repair and used $10 in materials from it.
Usually, I offer to send the paint materials in a fractional setup (like 2 0z. bottles, etc.) as a kit for the paint side of it, just to help the owners out. That's why I like to coach them thru the process on the phone. It's so much easier and less time consuming.
I hope this helps out.