I have been experimenting with a foam catapult glider I had designed, Foam Jet II lately. In the article that goes along with the plans I had used the white craft glue that is used in constructing the Squirrel, but thought I would try using a low-temp hot melt glue gun. I was careful not to get excess glue on the butt joints, and it actually worked pretty good. The weight was a little higher but the plane flew fine.
http://www.hbci.com/~bkuhl/FoamJetII.htm Is the link to the construction article. I have also added radio control gear from an Air Hog Aero Ace plane and the Foam Jet II flies well.