It's been awhile, but I believe I put in 4 or 5 pieces. You can't use a full length arrow, the forend isn't long enough. And, that makes getting the pieces easier as most archers using carbon arrows will break some from time to time. Carbon arrows are better than aluminum as they are very stiff for their diameter and weight.
Make certain you leave room for the recoil lug to drop into the stock, though, when you put the shafts into place. Everything within 2" of the epoxy gets a good coat of release agent, even the top of the barrel and the front portion of the action. It's easier to take release agent off, than to remove epoxy that has stuck to someplace it wasn't supposed to go. lol
I did the whole skim coat bedding job for the action and forend stiffening at the same time. If you skim coat the action recess, you have to remove or tape up the trigger so nothing flows into it's cracks and crevices. You also have to drill little holes at angles in the action recess so the epoxy can flow into them for mechanical retention, in case it doesn't hold properly to the plastic.
If the gun is shooting properly and you have never glass bedded an action, just stiffen the forend and leave the action bedding to another time.