We built something similar to that in the early 2000s as well, although we used copper pipe hanging strap for the connectors, a J-PAC from Ultimarc for the PC i

We built something similar to that in the early 2000s as well, although we used copper pipe hanging strap for the connectors, a J-PAC from Ultimarc for the PC interface and some plastic tubing for pushing the arrows away from the connectors. It worked pretty well too.