This is a little breakaway lanyard I had put together for super sketchy trees. I had to flip one of the neodynemium magnets and countersink for them to attract properly. Breakaway at about 170lbs. Only use when tied into another healthy tree and clean up stubs if you ever swing back. The goal is to never have these magnets seperate for the rest of their life, and hopefully I never have to use them to be honest. They are strong so you can pretty much climb how you normally do without fear of separation. Still, must use great caution and be safe.I picture a situation where two high TIPs in adjacent trees are used to get you close to where you want to cut a tree that isn't safe to climb. You pull yourself over to the tree you want to cut, use a breakaway or QR'd lanyard to hold you there to make the cut. If things start to go south, QR the lanyard and swing out of the way. You might not want to use the lanyard for climbing, just for work positioning.
There are lots of different QR designs. We've got plenty of creative people on this forum that could come up with something very specific to working in trees.