Take a look at the SteadyFast Stabilizer system. I purchased and installed the system on my 2009 32BHDS. My unit is 35.5' long and I had extreme side to side motion. I had the locking chocks which basically really only helps fore and aft movement. After installing the SteadyFast System, I have eliminated 90% or more of trailer rock and gave the chocks to my daughter to use on her trailer. Not hard to install and the instruction are easy to follow.