Super Glue ( the same company that makes the 90 second epoxy Included in the Kit)
Makes a 4-6 minute epoxy called (Quick Setting Epoxy Adhesive) which works much better that "Instant Adhesive". IMHO.
Please note my experience:
Unless you have everything set up Perfect, the 90 second epoxy will harden before you you set the fiberglass piece exactly where it needs to go.
My experience with the "Instant Adhesive" was an eye opener.
*While mixing the "Instant Adhesive" as directed it Hardened in 26 Seconds as I was stirring it*
I am grateful it happened that way, because it could have been disastrous.
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The Quick Setting Epoxy Adhesive is a better choice IMO. 4-6 minutes until Set. Not Instant.
Choose for yourself, I hope this helps.
Epoxy Link
http://superglue.supergluecorp.com/cat_epoxies.html
My Instant Adhesive (more like 26 second set
)