A guy at my field had his gear plate fall off with the gear attached and found there was nothing but a little hot glue holding it in.

I cut a hole in the top of the fuse above the gear (under canopy) and brushed epoxy all around the perimeter of the gear plate and former. Only 5 flights so far but I think it will hold up.

I found most ARF's need a little expoy around the gear and firewall. Saves lots of hassle later