Brendan
WKR
To be honest - I just used the Easton Epoxy that comes with them. I did let them sit for the full 24 hours curing before I used them, and I use the appropriately sized field points to go with them for practice. Pretty sure there are plenty others here who can chime in about them too.
Regarding the VPA footers - I think the one difference is there's a larger mating surface on the end of the arrow. If you look at the gold tip system, the insert partially covers part of the end of the shaft, and then the outsert mounts over that. With the VPA or the Easton BAR, you have the HIT inside and recessed, and then the footer by itself on the end of the shaft. And, unlike the gold tip, it's a footer back over the shaft as opposed to an insert/outsert that extends out in front. But you're right - I could see some issues with bag targets and them eventually getting tweaked that way.
Regarding the VPA footers - I think the one difference is there's a larger mating surface on the end of the arrow. If you look at the gold tip system, the insert partially covers part of the end of the shaft, and then the outsert mounts over that. With the VPA or the Easton BAR, you have the HIT inside and recessed, and then the footer by itself on the end of the shaft. And, unlike the gold tip, it's a footer back over the shaft as opposed to an insert/outsert that extends out in front. But you're right - I could see some issues with bag targets and them eventually getting tweaked that way.