Paul Tomlinson
Duncan, Hello. I haven’t yet used one, but have you come across using a slide switch to control frog polarity, and, via a wire connection to the tiebar, move and hold the switch rails in position?
I’ve struggled to find a photo on the WWW, but here’s one, and a link to a Youtube video, I’d suggest skipping to about 10m40s to see if you think the idea is worth pursuing…
