Here is a pick of the driver we made. Thats a crushed 12 oz cup for size referance. Its basicly an oversized metal fence post driver used all over the country when putting up woven wire or barbed wire fence. Have someone hold the post straight as you get started, place the driver over the post. Raise the driver and then slam it down on the post never raise the driver completly off of the post. You may set the post half an inch or several inches with every strike of the driver. With the end cap on the driver it distributes the force evenly across the end of your post unlike with a sledge that consentrates all the force accross the head of the hammer keeping the post from splitting. I sometimes halfway sink screws on into the sides of the post that will be under ground to aid agains the post pulling out.