The bug netting is great. I've never had a hole in mine (which has gotten some rough use, BTW), but I have successfully sewn up holes in bug netting with needle and thread.
Addendum 5/31/11: I got a couple of small holes this weekend when I set up on sharp-stick-laden ground. (Should have cleared away the sticks.) But duct tape and (later) needle and thread) fixed the problem.
The beak replaces the attachable cuben door (and works a bit better in the rain), and since you'd have the door along anyway, there's no loss in having it sewn on. I had Joe sew the beak on my Hex Solo. Does anybody want to buy a door?
The poles are another matter. Your shorter pole is too high for the back of the Hex Twin, but you could tie it off mid-way up the pole with no difficulty. Your longer pole is about 5.5 inches (if my memory serves) too short for the front of the Hex. You could set it up on a rock, but then you'd have to sleep with a rock in the way. ;-)
I love both my Hexes. I have little use for the Twin because my wife has given up on BPing, but I can't bring myself to part with it, even though I use the Solo exclusively now. Eventually, I suppose I'll have to to buy more gear, but the danged thing is just so elegantly and efficiently designed. And now you know why my children don't have shoes . . . .