I plan to do a little under ice beaver trapping. Last year I used baited conibears and had some success. This year I plan to try some snares. I've copied an idea from Rally Hess, a big numbers beaver trapper in the states.
5/64 7x7 "beaver spikes" it's a snare and support all in one. Drive the spike in your bait pole and run a safety cable through it and you're done.
That's a good video by Ryan as usual. My only concern would be he will get snared beavers up on the ice if the hole doesn't freeze quickly in warm weather.
I'm as green as they come snaring beaver but using such a large hole is contrary to the research I've done in preparation. Thoughts on that?