About repairing airplanes:

Back in 1970th in our RC club one guy learned to fly on a Goldberg Ranger 42 (foam plane). He crashed rather often but since it was a foam plane and rather light it was also rather easy to repair. I saw it dive straight down into the ground several times but was not that much damaged by his dive and crash exercises. Anyway I think he had it for a year and was probably reparied 20 times, at least. Then new people wanted to learn to fly RC and he sold the Ranger to another guy and he basically continued the pattern with dive and crashes while learning to fly. Before that Ranger 42 was ready for trash can the fuselage was probably made more by epoxy (repairs) then foam - that is a very good example of NOT throw away an airplane just because it had some crash and needed repairs.

/Bo