I used 7 1/2 because that is what I had left from my last lease after a cow destroyed 1/2 of a panel. When I built the 7 1/2 panel at my current lease I used the 1/2 panel as a gate. With the gate I can back my Rhino right under the feeder tripod to fill my feeder.
09 Yamaha Rhino 450 Camo, Weekend Warrior FS2300 toy hauler
"I didn't climb to the top of the food chain to eat only vegetables!"