Stretch it to fit the bottom in a valley and the top on a hill. Then use a carpenter's hammer to twist the loose upper or lower section. Insert the nall pulling jaw into the wire and give it a 90 degree twist.
To unroll the wire, I bolt a pipe onto one wall of my loader bucket. With the bucket curled forward, the pipe is horizontal. This makes it easy to load the wire coil. Curl it back and its vertical. Then drive the tractor down the fence line and the wire will unroll once you tack the starting end. Use a piece of plywood for the base of the bucket swivel so it doesn't catch on the bucket walls. Cut a hole in it to fit over the pipe.
To stretch the wire, use your tractor in creeper gear to slowly pull it tight. Use intermediate steps to check the tension and freeness at each post. Then staple it down from the beginning end. When you get to the tractor end, the wire will be tight but easily relaxed at the end section when you let the tractor move back. Use a chain or 2 pieces of 2x4 to capture the wire for pulling. Be careful not to pull too hard. You may find that the starting post breaks or pulls out and comes flying at you !
Some dogs like to dig under a fence, so make sure the bottom wire is at the very ground level. If Fido still is curious, run a hot wire for a few days 6" off the ground to remind him of his responsibility. And for heavens sake, don't P on the wire.
