With a wagon wheel design, all gates for the separate pastures meet up in a central hub. The idea is that you can move the animals into the hub and from there, into any of the other pastures with a minimal amount of effort. The other benefit is that all feeding and watering can take place from the central hub, rather than having to go pasture to pasture.
I started by using Google maps to get an areal view of the pasture and then mapped out the design on paper. I then bought land marking flags and marked out the pastures using those, to get an idea of what it would look like. I asked Nick to drive the tractor around the hub to make sure we could get it in and out when we need to haul water, hay or the pig houses around. My cleverness ended there.
A few lessons in fencing (learned the hard way):
1) When your kind neighbor lets you borrow the fence post auger and his tractor, measure the depth of the holes to make sure they are deep enough and all the same, or else you will have to go back and redo them all. Grrr....
2) If you don't want your fence posts to look like a band of drunk monkeys put them up, don't eyeball what you think is a straight line. Tie a long, highly visible string to the first and last post and use that as a guide.
3) They sell woven fence stretchers for a reason. If you try to pull a 200lb roll of fencing tight, you will likely either lose a finger or give yourself a hernia.