I have a 4-gallon waterer with 2 horizontal nipples. I think it's a Manna Pro or Harris Farms thing; found it on clearance. It has a hook but if I hang it, when they peck at the nipples it spins away from them. Right now I'm using the hanger to stabilize it so they can't knock it over, but it's resting on bricks so it doesn't rotate. Do those of you who have homemade nipple waterers use blocks or is this a design flaw in this particular waterer? I'm picturing a big stack of blocks by the time these Jersey Giants and Brahmas grow up! Also, how many chickens per nipple? Thanks!