RE: Landing on tall grass/pavement
Well, I was planning on taking off from the pavement, that wouldn't be a problem. The parking lot is probably 50% longer than the grass runways at the airfield I go to (don't know the exact length and I'm poor at judging distances, sorry :P). I've gotten pretty good at landing at very low speeds, but I know there is still enough momentum that it would nose over if it landed on thick grass.
I could kill the engine, and probably have enough room to stop, but that's getting pretty risky. Balancing the amount of friction for being able to take off and land in a limited amount of room might work or might not. The skids on the wingtips sound like the best idea, but I'd have to look into it a little more. The wings are made from balsa so I don't know how well that would hold up. I assume the skids were just a plastic?
Thanks for the idea's.