Yeah I have an option (reason I said maybe) to make my own tub from grainery rings reinforced with thick posts 4' apart, sunk into the earth at the recommended depth (was it 4' or 6' ?) The gate I'd have to think about, how that's going to be built, but it shouldn't be too hard to figger out. As well as welding or bolting in some iron bars acting as a rachet for the gate to lock in place in different spots in the tub when pushing the animals in (hope I said that right   ).  I got a lot of options of using 2W equipment, or Hi-Hog equipment (a little more expensive than 2W), which ever sells at better prices at one of the farm supply stores up here.  Concrete would be expensive, but an option to consider, thanks.

I could post on what my changes would be from now to when it gets changed, if anyone's interested?