First-----Be careful,active runs in and out of the lodge,can have extremely thin ice---even at 30 below.Constant beaver activity under the ice,can mean very unsafe ice.
That said---can you see the feedbed? 330s,can be set around the feedbed .Now this is one time I set 330s with the trigger on the top.I bend both trigger wires into a J.I then take and wire together a small bundle of popple,these are rolled onto the end of the J--up the trigger a bit.
The 330s can then be hung with heavy wire or cable.I set them at right angles from the feedbed,so they are easily visble.They must be hung far enough,so that the back of a caught beaver,does not freeze into the bottom of the ice.
We will continue on,as you run into more questions.
Tom