Threaded inserts are spinning

Hello everyone, I currently own a pro angler 14 360 and I love it. An absolute unit of a fishing platform. However I have a problem. 3 of the threaded inserts are spinning freely. One on the front drag handle, one on the rear drag handle, and the final on the rear attaching the H rail. I've tried removing the bolts to see the damage but I could hear a thud every time I turn the bolt. Does anyone have any solutions to fix this problem?

I had a similar issue with my kayak once. What worked for me was applying some epoxy or strong adhesive around the insert and then tightening the bolt. That should help secure it in place