Actually a good idea. I thought of using that idea a few years back,
but ended up getting the Long Ranger with 3 transmitters. I have been
real happy with it. Just don't start and stop the collector while it
is on its starting winding a lot. It is hard on relays.

Back on your idea. I think it would be a great approach. I recommend
getting a good 20 or 30 amp switch. It might be even better to get a
microswitch and have it control an alternate action relay. Operate the
switch or microswitch with a small stainless cable (like the old U
control cables for model airplanes--if you are old enough to know what
I mean). Threading the cable through small pullies would make it
operate smoothly with no annoying "springiness". Using those 3
enhancements would make for a very smooth operating control.