ORIGINAL: Beef
Are you going to do any modifications to the wing retention method? The SFGs are going to try to remove the wing from the fuse during large yaw angles. I would also think the stock threaded hooks in the wing root are not up to the loads involved as well. Food for thought.....
I used 2 #64 bands tripled over on my last SE... but you pose a good thought. I guess if our wings rip off on the first knife edge pass we'll have to do something to "beef" that up. (sorry)
I think that a couple of #64s or a zip tie should be pretty good. I've pulled on the wings pretty hard to see if I could budge them on my last SE... they didn't offer to move. But... I'm still gonna think about your suggestion... maybe a hook with a deeper thread and CA'd in place might add some extra insurance. hmmm...