Oh, do I remember those days! Oh, was I recently reminded of those days when for the first time in almost 40 years I was shooting in a new set of "woodies" mounted with BHs. Lost 1 in the target, found 3 more that were loose before I fired them.
I hated hot melt back then, I hate it now. I had many irons in the fire so I had trad shop setup my woods. It was too late by the time I remembered to call and ask that hot melt not be used.
All that crap glue would do is to be squeegeed to the front part of the broadhead ferrule, which at times made it difficult to fully seat the shaft in the ferrule. The stuff would be pushed out of the slots on some BHs with bleeder blades.
We tried everything. Drilling small holes in the ferrule, tapping the ferrules with punches, etc.
In the end, I, as did many others, ended up using Bohning fletch glue. The fletch glue did not guarantee the head would not come off in a target, but the incidents of it happening were far fewer. We would wipe the shaft taper with a layer of the fletch glue, let it sit for a few seconds, and then insert the shaft into the broadhead ferrule. We also had more time to adjust/index the head.
With today's products, there has to be something far better than hot melt, and better than the fletch glue.
I use an anaerobic (doesn't need air to cure) Loctite for my screw-ons. This is what I am looking at for my woods. It is a wood to metal adhesive and also anaerobic.
http://www.usaknifemaker.com/store/depend-330-kit-by-loctite-includes-activator-p-558.html