This is what the old man used for trapping beaver conibear 330 body trap
https://www.trap-anything.com/beaver-trapping-techniques.html#:~:text=
Once you locate the entrance,from swimming around the trap. The ice will be much thinner around the beaver house, use a spud bar and if the beaver dam is big say 15 to 20 feet across use a long sappling to probe under the ice. The lodges could have more then 2 openings, so when using the spud bar chip out a 8 to 10 inch hole and use the branch to probe the side of the lodge. Once you find a spot punch a whole atleast twice the size of the body trap. Back then we didn't have z ties and if you used zip ties make sure they are heavy duty, we used #1 copper wire because it didn't rust out like regular wire. Pretty much the diagram in the article will work, you will know if you caught all the beaver when the feeder holes that they use to come out of the water will be froze over. You may need to check the lodge atleast 2 times a day or more depending on how big the lodge is.
https://www.trap-anything.com/beaver-trapping-techniques.html#:~:text=
Once you locate the entrance,from swimming around the trap. The ice will be much thinner around the beaver house, use a spud bar and if the beaver dam is big say 15 to 20 feet across use a long sappling to probe under the ice. The lodges could have more then 2 openings, so when using the spud bar chip out a 8 to 10 inch hole and use the branch to probe the side of the lodge. Once you find a spot punch a whole atleast twice the size of the body trap. Back then we didn't have z ties and if you used zip ties make sure they are heavy duty, we used #1 copper wire because it didn't rust out like regular wire. Pretty much the diagram in the article will work, you will know if you caught all the beaver when the feeder holes that they use to come out of the water will be froze over. You may need to check the lodge atleast 2 times a day or more depending on how big the lodge is.