Here is a fix I came up with for fixing a fiberglass maul. I drilled a 1/4 inch hole through it and pinned it with a brass rod. I also did the JB weld trick. The drilling was surprisingly easy, with a pilot hole then the 1/4 inch drill bit. I also tapered the hole using a step drill bit and flared the brass rod into it with a hammer. Then sanded it smooth with a flapper disc. It cost a couple dollars for the fix, but I figure it is a life time solution. Perhaps it is how it should have been done in the first place It's an 8lb head. Here is a pic: