Water your young trees and save time.  300 gal tank for back of pickup has pulley system so that you can open the valve to water the trees while sitting in your cab.  Just add a 6' piece of 2" PVC to the valve. The other tank (500 gal) is mounted on a stand so that the pickup can pull up and have a "fast dump" so that the pickup tank is full in about 5 minutes.  While out watering the trees, the tank on the stand is filling up up for the next load.  I used this system on my trees and it worked great.  Saved a lot of time.  My trees are larger now and want to get things cleaned up.  If interested, let me know and I can make you a deal.  Just don't have use for it anymore.  I can load on your trailer, I have tractor with a loader.  (Chain and boomer aren't part of the deal).