If U stand at the approach end of the runway lwft to right or right to left depending on the wind and not in the middle U can make it half the length. Reason being almost every one lands where they are standing or beyond and if U stand in the middle of the total length of your runway then U pretty much use only half of the Runway anyway. I ran into a complex like this in Denver on the East side. There (is/was) a state park thet had the pilot pads (stations) at the ends of the runways and depending on the wind U stood at one end of the runway or the the other not the middle. Anyway stop talking and get cutting winter is on it's way. Flying time is running out for the northern 2/3 of the US.