That's a good idea - I'm with you on the seal that comes with them and i thought they would just pop open because it would now be on the bottom (I always use the seal at the top so there is no gravity pull) - so very scientific! I did the long bags with the elf and they really were cute. People loved them. But I think I may try the shorter legs on the next batch - my friend wanted to try short too so that's why I asked.
I LOVE my ATG gun. I bought two - i have one at work for lunch time projects. Got the second one on clearance and paid about $10 for it with two rolls of tape. DEAL. Took a bit to get used to the size but I do love it. Things stay put with that baby.