Actually, the local r/c club sometimes holds stuff at our airport, so it won't be too dificult to find someone to ask, I just figured ask at least someone before I forgot and was left having the model finished with no idea about covering.
And another question. Is it possible to mount 4-strokes inverted like they do with some 2-strokes? I would like to prevent a big ugly single cylinder sticking out of the side of the cowl if I can avoid it, but I haven't seen any model planes with this. I know I would have to worry about making sure all the fuel is out of the cylinder before starting (hydrolock), and it sounds like I would probably have to have an onboard glow driver, but is there anything else that would preclude me from mounting it upside down?