I have used Beacon's Foam Tac glue and can confirm it is good. I have snapped off the both wings of my HZ Champ at different unintended landings. Used the Foam Tac to glue the wings back and the HZ Champ still flys as well as before - except for it's scars.
I think it is about $5 a 2 oz bottle. It is great stuff.