i was going to do the same thing puck ... remove my inserts and fiberglass em ... i was thinking close to what they're saying but a lil differen.t
I was going to try to find small bolts with an almost flat top. Someones gotta make em. I'd drill them through prior to glasssing, and then glass over them so i know they're def. in. Then yes, i'd use a nut and washer and tighten it up. But that adhesive from behind sounds like a really good idea as well. That way there is no chance in breaking the glass if u tighten too much or having to worry about getting it smooth. =) i'd say def. go with the bolt idea ... let me know how it works for you.