I use beaver carcasses too. As for lure I have, and if I do, I use some cat urine at this time of the year. Don't put it in the traps

but on the outside on one side. I have used Lure, and if I do it will be in February when the breading season is on. Use "gland lure" than. Put it on a stick and hang it inside the trap up on top of the trap. This way you got him looking and smelling upward not paying attention to where it steps. Also put a small stick in front of the trap pan for him to "step" over onto the pan.
My mentor Carl Jensen use to use nothing but eye appeal such as feathers or a duck wing hanging from fishing line.
I hope this kind of helps you.
JC
