Actually, I take "planks" as a complement. It takes a little bit of skill to turn a plank into a piece of art that actually flies.

As to the other names that we call each other that is hard to take as an insult, I believe fixed wing and rotary wing guys would save a lot of arguments.

As for the question "Is it worth fixing?", don't figure in the price of the tools and glues because you will need them anyway. Even with a brand new ARF trainer, you will need a sealing iron to go over the covering and tighten it up.

If you want to save this plane, you might consider going to the field and trace the tail feathers from one of the other trainers. As long as it is a .40 size trainer it should be close enough to use as a pattern.