Update on add and extra leaf spring, it was completed last Wednesday and I took the truck and trailer on a camping trip this past weekend.
The leaf added an extra 3" unloaded height from ground to trailer hitch. When I loaded my trailer onto the hitch, the height dropped down to the original unloaded height. Added the WDH bars and the entire rig just stayed at that height.
Towed just great with a lot less bounce between the truck and trailer.
When empty, the back felt a little bit rough, but nothing compared to my previous 3/4 ton when empty.
Also I will now be getting much better fuel economy, with the back end jacked up and the front end pointing down, I'm always driving downhill, far easier on the engine.