Automatic Brakeman on Fastrack?

I’m converting from 027 to fastrack & want to use my brakeman car. I learned on another site that changing the shoe to one like the milk car or log dump car will let it work on the 12054 operating track by hardwiring a control rail to an outer rail. These operating tracks have been hard to find and are a bit pricey.

It seems that someone has bent a thin metal strip into a ‘U’ to place into a fastrack section. Does anyone know about that? For example, what thickness of metal & what length is each section of the ‘U’?

I assume this would have to be inserted from underneath the fastrack & hardwired to an outer rail.

I’ll get more operating tracks, if necessary, but any info will be appreciated.

wyomingscout