Remote troll help

[TheFishSlayer]

I have a skeeter. It is fiberglass. It has a remote troll on the back and I noticed that the bottom bolt was hanging out, So I called Dick's and they said that it is probably a Lag bolt which it is and that I would need to bring it in and have a larger one put in. For some reason that doesn't make much sence to me to have a lag bolt in fiberglass. He said that when this larger bolt wears out than they would have to take it off and refiberglass it and start again. Any ideas on what I can do to fix this permantly.

Thanks
TFS
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