David and I took most of a day to build the sticks on the sides of the
goalposts.  Late that afternoon, my sister Cindy and her family showed up,
just in time to help with the big timber.  We got the two ends done just as the
daylight faded.

The next day, with everyone's help and a pulley system from my Dad,  we
were able to stand all the posts.  It took most of the next day to plumb and
level each one and strap it into place.