Regarding expansion (3-5 x by volume with gorilla glue), I put the arrows point down, put a boot over the fletching end, put a weight of 2 pounds on the boot heel, and support the boot against a table edge so it keeps the arrows vertical. I haven't had the glue seep out of the joint, and I am liberal in the application.
Remember, Gorrilla glue is nasty. What it gets on, it stays on.
Now, when it comes to arrow vs rock or metal at full force, I've had a few disentegrate by driving the point into the shaft, but surprisingly few (I'm really hard on arrows). I don't consider that a glue failure, but rather a failure of the arrow launcher. I use Gold Tip big game 100s, and find them incredibly tough. - Jay Campbell, JD