Our 2009 Jayco Greyhawk came with heavy duty Anti-Sway bars. It handles great on the road, but when camping with both slides out (one on each side), the camper has a tendency to rock side to side, especially if someone is walking into the camper or getting up off one of the bunk beds, which is on a slide, or the couch which is on the other slide.
I bought these
stabilizer jacks to see if stabilizing the corners of the camper would help without spending a lot of money. I bought ours from Walmart, but I couldn't find them on Walmart's web site. They work really well, but they do sink on soft ground if you don't put a block of wood or paving stone under them. The sinking does require they be adjusted.
I do not put them on the frame, as the suspension isn't the real issue. The first couple times we camped I put them on the frame and it didn't help much at all. I put them on the edge of the coach body, 2 towards the rear corners and 2 on the front corners. That helped a lot with the rocking side to side.
They do need to be made as tight as possible. I keep checking each corner to make sure they haven't loosened as the others get tighter. They are hand turned to raise the stabilizers, so I don't think it would be possible to lift the RV with them - which is a good thing because lifting the MH by the coach body would most likely cause damage. I just turn them until I can't turn them anymore.
-Michael
Michael Girardo
2017 Jayco Jayflight Bungalow 40BHQS Destination Trailer
2009 Jayco Greyhawk 31FS Class C Motorhome (previously owned)
2006 Rockwood Roo 233 Hybrid Travel Trailer (previously owned)
1995 Jayco Eagle 12KB pop-up (previously owned)