You would need some sort of captured track. Rather than a loop running around a wire, the “running” part would be a carrier traveling through a track so that you could support it without interference and make the bend/turns you want.

Traveler tracks are the basic idea, but much more substantial than needed and overkill for a dog run, but the idea remains the same.

Unless there’s some kind of gated, spring loaded toggling bracket I’ve never seen.. I suppose you could fabricate your own fairly easily with some trial and error.

Ach! Mein guter freund aus Berlin, Herr Midifier.

It’s a cool photo…. but It’s not really national news. ABC 6 WLNE is just the local providence affiliate.