6pt here. Just use it as it is good enough for us. Only trailer I didn't notice any movement was with tires removed and on blocks.
That said, I did have X-chocks with my previous TT that worked great in that instance (just manual 4 corner stabilizers). I tried them on the current 5th w/6pt, and found no difference (IN MY CASE). So I sold them.
I also tried a pin stabilizer (good one, 3 adjustable legs, etc). Had one for a 5th I owned a long time ago, and it worked great with that 5th (but only front legs and rear stabs on that 5th). Did nothing appreciable again for the current 5th. Difference in part was the old 5th had a solid pin, the current had a trailair (which allowed too much movement). Bought it used for $65 and sold it again for $65. It was worth a shot.