don't try it!
I tried that on a 40 inch wing and it was terrible.
Flight was slow, and The wing could barely could maintain altitude.
I also destroyed my favorite (and only) EDF on my only landing!
Got a video somewhere of a Grim Reaper with a 70mm edf unit on it. It flew just fine. I don't think the exhaust tube will buy you anything. It's not going to fly out of your hand like the propped version will but give it a good overhand toss and I think you'll do just fine. On the Reaper the guy was flying around a half throttle and it was quiet
Vid to follow if I can find it.