This should make some heads explode
Back in the day we would have drove a row of stakes made from #2 1x4's down the middle an inch and a quarter below grade tobscreed off of.
Drove two 8 penny nails just below grade where a inch and a quarter piece of black pipe was a tight fit on top of the stakes so it didn't roll around while you were screeding.
When we screeded down to the end of our pipe, we pulled the pipe down and slung concrete in the low spot with a shovel. The bull float took care of it.
That was a pretty sweet setup that worked better than what I was originally thinking.
