Soopeli; I've just read through this entire thread, so far. Boco is, obviously, a very accomplished trapper of Marten. He also seems to operate in conditions / temperatures on a par with yours?
I don't know. I've only skimmed through the thread, tonight. I did so, deliberately, so the glitch may stick out better. *What are You Not doing that Boco Is doing? Or vice versa.* Nothing stood out.
I also should point out that I've absolutely No experience of temperatures / snow falls like you people operate under! Nor will have the martens I've experienced.
One thing though. ONE Thing ... grates on me. This 'massive' lump of Bait thing. Somebody, above, mentioned the Q Tip
of Lure? Is that an internationally recognised thing? The dual ended 'Cotton Buds' we clean our ears out with ~ despite all medical advice?
See, I work in far more temperate conditions. I do Very little. But, in my vast inexperience, I've found One thing: Curiously, a marten May shy away from the biggest, most 'Delicious' Baits
. Or even climb over them, to get into a box, at a Q Tip of Scent Lure
Less being More? Dunno.
And please feel free to PM me, to draw My attention back to this thread. I don't, normally, look in here