Coaster: The footings are long, but they're effective for my set-up. They add a lot of weight up front, which makes the arrow recover more quickly. Yes, you gain some spine when measured on the spine tester, but the effective spine drops, because more weight up front gives the effect of less spine when the arrow is fired. You probably know all this. In the end, the spine difference is a wash. What I get is an arrow that flies truer, recovers more quickly, and hits with much more force. This is especially necessary when shooting 42-43# pound bows with shafts that spine in the 35-37# range. They're not all that heavy to begin with. Also, they arrows survive the targets at the range longer, which are not kind to my wood arrows. Lastly, the brass produces less friction and is larger in diameter than the remaining wooden shaft, both of which aid in penetration. (All in all, think of these long footings as creating a quasi-tapered shaft. They in essence produce many of the same results.)
Rick: Thanks for the compliments on the quiver. It's one I made just before last fall's turkey season.