I installed the system myself, it works great. Am getting about 3 gpm and am pumping into a 500 gal tank as needed. I also installed the pitless adapter and dc motor which runs off solar and wind-charged battery bank. The motor is very efficient as there is very little voltage drop compared with other blowers and various motors I use out there as well. Also; I had no helpers and knew nothing of wells. My biggest fear was dropping everything down the well during installation, but the holder tool worked perfect. The simple pump system worked perfect for our off grid needs.
The cool thing is that if my batteries run out, or something happens to my panels, I will always have water as I can always spare a second to put the pump handle back on and give the kids something to do.