Don,

I was thinking more along the line of a lawn mower size battery. I am a carpenter, of sorts, and have some mechanical skills, but I wouldn't try anything as complicated as a pivoting switch.

My intended purpose is to keep anything from crossing the path of the spinning prop, simply for safety reasons.

I'll want it lightweight for my ailing back and easy transport between truck to house.

I've also been thinking of making a double decked transport box with separate compartments for the fuse and the wing. It would be slightly padded with carpet or some other thick cloth material. This would help keep all the parts from shifting in the wind during transport in the truck bed. I would make it just big enough for a comfortable fit.

I often see people transporting 2 or 3 planes and they regularly need help to get them aligned while loading up. I'm pretty sure that by the time they get home the covering is getting rubbed where it will eventually make a hole.

just my thoughts,

elad