It appears that this device fits into the nock or is assembled that way. If you want to talk about arrow stabilization then it needs to be explained further. This device adds weight to the nock end of the arrow. Just how much weight? Most of us know that stabile flight depends on the point end of the arrow being heavier than the nock end (FOC), usually 10% to 15% heavier. I don't see where this device will add any stability to the arrow in flight; in fact quite the opposite.

I can only assume that you are saying that this device adds stability to the arrow upon deceleration in an animal. I wouldn't be able to dispute this without scientific evidence, but it has been my experience in the last 40 years, and therefore opinion, that arrows just do not decelerate rapidly upon entry. Good shots blow through like a knife through hot butter and the rapid deceleration happens when the arrow hits something solid, like the earth. By that time there is little need for more oomph.

I hate to even bring up the subject of hitting bone. Arrows and broadheads aren't designed to break bone. They kill by internal hemmorage. I know it happens, but the vast majority of shots are thru soft tissue. Seems like a lot of hype for the few shots where this thing would do any good. And if heavy bone, like a leg bone is hit then all bets are off unless your weapon goes BANG.

What I'd really like to see is links to some of this scientific evidence.