Don't make this more difficult than necessary. If you are setting a slide, the beaver is already using it to access food unless it is a crossover to more water. If it's already going there, you don't need a castor mound or any other advertising. Also, the white pvc pipe on the trigger mite be a stop sign rather than an attractor in your situation. I think those are best used under ice in deeper water.
If the water is shallow for a good distance from shore, a drowning rigged foothold may not be a good option either. You might move the 330 up to the top of the slide and camo/fence it a little with brush if you can LEGALLY and safely do so. However, my first choice would be to hang a snare (IF LEGAL)) with an approx 9" loop with the bottom about 2" off the ground at either the top or bottom of the slide, or better still, both. If you set the bottom of the slide, move the snare up slope enough to keep it from touching the water.
If you are able to use either of these methods, be sure your support wire is stiff enough to hold the snare steady as the animal is entering it so it can close properly. Also be sure you have it anchored properly so your catch can't make it back to the water.
I catch a good many beaver with snares and use 330's only if that's what the situation calls for such as bank den entrances or narrow channels where the water is at least a foot deep so I can use a dive pole. I NEVER use a foothold for beaver or otter because it's a lot of work for an old man and I don't find it necessary to get the job done. Snares are a great tool for those places where you have to walk & carry all your stuff in. I hope you can legally use snares, cable restraints or whatever they are called by your state's wildlife agency. They are a great tool for beaver removal in lots of situations. Some guys get good at using them under ice, but thankfully I don' have to contend with that, tho yesterday, today and tomorrow have been/will be close before it warms up again.
Last edited by etxwoods; 01/02/18 12:57 AM. Reason: Disregard