After last weekend's trial run, and almost getting motion sickness when parked, I installed these two products on our White Hawk 20MRB today.
BAL X Chock for wide stance axles:
BAL Locking Arm Stabilizers:
Reduced the rock & sway by a good 85%. I would put the Locking Arm stabilizers on all four corners but can't be done with location of waste dump. So, I put them on in opposing corners. Really helps!
(Note: I lifted the photos from an auction site. The auction is not mine. I bought both items at CW.)