I use the slow set marine grade epoxy with good results. If you need to pull the insert at some point, just screw in an old field point and apply heat to it until the epoxy gets soft, then pull out the insert using pliers on the field point. The shaft won't get too hot as long as you keep trying to pull on the field point after applying some heat, and then add heat repeatedly until the glue gets just soft enough to allow the insert to be removed. If you start boiling the epoxy with heat, it will also heat up the shaft enough to cause damage. I don't pull inserts from shafts very often, so there has not been any problem with repeated heating of the ends of my shafts. I have never had a problem with the end of the shaft being damaged by heat, although many people will condemn this process as being too damaging on shafts. It isn't if done properly and infrequently. Hot melt works well too, but it can get brittle and fracture if you hit hard surfaces with your arrows. I like the idea of the pliable hot melt that Dean Lintz says Big Jim uses, but I have no experience with it. Marine epoxy is MUCH stronger and is not as brittle as the fast set epoxy. It has never failed me, although just about every other adhesive I have used to glue in inserts has failed at some time or another.
Allan