Here is the introduction thread for Magnebed. Basically it is a trap placement device that allows rock solid bedding in even the softest bottom mud, full control of jaw orientation and full control of height on or above or below the surface of the bottom. I have been using them in rip-rap the past few weeks and LOVED them for that otherwise impossible situation. The entire shoreline of the customer was riprap, and I did not have the option to move to a better place, and well concealed footholds on Magnebeds saved me on this one since the three that were left when I hit the scene would not go near any body grip or snare, and local ordinance prevented shooting.
They are designed primarily for beaver control professionals, but I admit I have been surprised at the number of fur trappers who have bought them.
There is a website that is live but unfinished, mgnbd.com
Right now there is one model on the market for beaver size traps, and I have another model mocked up and about ready to send to some ADC professionals who have helped with the design for testing. The new size fits all the other sizes and brands from #1 thru #4 coils.