5th wheel rocking motion

Cheapest is BAL X-Chocks between wheels to stop suspension from moving.

Next would be stabilizers like JT Strongarms or such to stop stabilizer jacks from moving.

Most expensive would be a four point leveling system (aftermarket) to lift/stabilize frame.

You will need something like JT or similar product at the front of the trailer and rear to stop side to side movement and any bounce......and some brand of adjustable chocks between the tires to stop fore and aft movement.

1st of all, just make sure no one come's knockin' when the camper is rockin'. 2nd, I agree with the above posts. Chocks that lock down the wheels do wonders. With the addition of braces on the front landing gear and rear stab jacks, you will get a pretty solid camper. Try the chocks first.

I have a jayco 28.5 rsts 5th and installed the JT's ,best decision ever. The only issue I had was having to relocate the spare mounted under the front as it was in the way of mounting brackets.

We installed a set of JT's last Fall and it stopped the wiggle, without X chocks.
Our 5er sits a bit high as we tow with an 2001 Ram 2500 4X4.

don't screw around with anything else just put on JT Strong arm's

JT Strongarms OR Similar devices are great

But in mean time....
X-chcoks between the tires Both sides will stop back/forth motion especially when used with wedge wheel chocks

After you have leveled side to side and unhitched ready to level front/rear
Run front landing gear UP/Down to level
Then run front legs DOWN 1' below level
Run rear stabilizers down and SNUG
Then run front legs back UP to level

This makes 5vr very solid

You will still have 'bounce' as long as suspension/tires are still in play
Placing jacks/stabilizers on frame RIGHT in front or back of wheels will stop that bounce

4 point leveling won't stop the wiggle, what it does in level your rig. To stop the wiggle and many have noted, install JT Strongarms.

We have these DIY RV wheel chocks and they work great!

"I have a jayco 28.5 rsts 5th and installed the JT's ,best decision ever. The only issue I had was having to relocate the spare mounted under the front as it was in the way of mounting brackets."

This is the model we have. We'll look into the JT's. Where did you mount the spare tire? In the back?