I am getting a quad of slate turkeys and a black spanish tom this month. I plan on using some hog panels to make their pen out of. They are about 5' tall by at least 10' long. ' Me and my dad differ on how to construct the pen. I am also getting some woven wire, and my dad thinks I'll need to cover the turkeys pen with the wire. I think I can use some type of heavy string, or maybe electric wire to loop across the top of the pen to keep them from flying out. We don't have any problems with predators thanks to the dog, so which of us is right? The cover on the pen would be only to keep the turkeys in it.