DIY easily adjustable goat pack train

[IdahoNancy]

My answer for a breakaway is the Nite Ize plastic dual carabiner or double gated. It is S shaped and comes in different pull strengths. It allows you to clip 2 things together like a lead rope and a D ring on the saddle. I use a 25 lb pull plastic carabiner at the tie off point. It provides some strength at the connection but springs open if the goat pulls hard in a panic. Most often it opens but doesn't break and is usable again. With this the tensile strength of breakaway line is not as important.