Watching this video makes me so relieved my marten line is picked up. Unreal amount of marten tracks around that box. 160 for marten? I guess the larger opening helps prevent hurdling on pole sets. Good luck and thanks for the video.
There was a lot of tracks everywhere but due to ice and heavy snow, traps were all out of service. I love 160 and 220 for pole sets for the reason you mention and also because we got more fisher on our line. Love to watch your videos too, thanks!