Thank you!. I made a long trough with 1 1/2 inch holes, but flat on top w/ a hinge - they can go down so far and then can't reach the food and I ended up just opening the top and there goes the food again... it's about 1 1/2 inches deep.
I'm going to keep trying because feed is expensive!
And BTW, can anyone tell me about how much I should be feeding adult chickens? 10 White rocks, 4 Golden Comets, 1 EE Roo, and 1 EE hen. Don't know if they're mixed breeds or not, but this is what they look like! They're going on about 2 years old. (Just found that out today.) Seems I'm going through 50 lbs of feed too fast.