Tater,
I am not saying that at all. I don't think it matters if it is a standard HIT shaft or a FMJ.
I think the damage I was getting was when the insert would slip inside the shaft using the other epoxies. This would drive the point into the shaft or split out the side. Now that I use the JB weld, I'm not having any such issues so I haven't bothered to foot any shafts recently; FMJ or MRX or regular Axis.
In my mind, the footing transfers all the shock from just the insert to the insert and the foot and that is a lot of surface area and that is a good thing. You've got a lot more rock to hit out in Colorado than I do too; I'd probably still foot them if I was fortunate to live out there! I'm not having any issues and I stump shoot at least once a week for a couple hours.
And I did say that if Bill was using the hot melt as was his plan earlier I think it is still a good idea to still foot them.
This test I did helped me come to this conclusion:
http://tradgang.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=1;t=060165