I recently got the Winfield RV crossbrace stabilizers for the front landing legs (very similar to OC's homemade cross stabilizers, except more expensive, but I didn't have the time to make any myself)
They've greatly reduced the side-to-side movement felt in the front, but I still have quite a bit of front-to-back movement (even with x-chocks) and bounce.
I'm thinking of adding some BAL lock-arms (can be bought in individual pairs) to front legs (front-to-back) and/or rear stabilizers, and maybe some stabilizers near wheels.
2015 Rockwood Signature UltraLite 8281WS
2016 Ford F-250 Lariat CrewCab, 4x4, 6.2L V8