Tip 1. I took some scrap steel and made this bracket to slip over a t-post and have something to attach the chain to. Lets them spin to their hearts content without getting bound. Only once have I had to go untangle it.
Tip 2. The eyebolt that you put through the endcap to attach the swivel and chain to, when you go to bolt together the eyebolt, put a little loc_tite on the threads. Mine got beat loose and came out. Had to go looking for my pipe.
We use one that is placed about 80 yards from the camp, anchored w/a T-post, then place a wireless sensor at it, when the pigs would come in, the sensor goes off in the camp. But, believe it or not, that after years of use (in the same spot), would seem the piggies have figured out when we're there, and will empty it when we're not there.
Id be interested in this Sensor set up you have. Itd be nice to have that set up in my deer stand so I could just wait in the dark until it went off and be ready to hit with the kill light.
I don't know which one he's using, but the one I've recommended on here in the past is this one:
Chamberlain CWA2000 You can add up to three additional sensors, and we're running 3 kits out there right now. Furthest one is 250 yards away from the receiver, through trees and brush, and works just fine.