Would I be correct in saying that the only rest you could shoot these through would be a drop away?

Obviously on a double prong rest there would be fletching/prong contact.

With a WB, I would imagine that becauseof the extreme helical of the vanes, it would be more difficult for the vane to "sift" through the fibers.

Hey, if you get bored, you can always take three off and shoot spitwads from your stand at the squirrels. COOL IDEA!