Webmasters note: The following infomation is just snipits I have found on the subject by surfing the internet. I hope this answers some of your Repair Questions.
you might check with your local hardware store and see if they sell a Fiberglass Tub repair kit.
To strengthen any given area, first refiberglass the damaged area from inside. Then mix a quart of fiberglass resin together with a pound of baking soda. Mix well, then pour it into the cracked area. Be careful not to much hardener to the resin, or it will cause the mixture to cure to fast and it will crack. When this mixture hardens it turns to a rock hard substance, that adheres very strongly to the panel.
Fiberglass offers repair & refinishing alternative.... By Doug Walsh
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