As covered by others already, many variables in coaches and wind related handling. For some coaches, aftermarket component additions can be of great help. But some coaches, usually the entry level of a manufacturer, have way too much 'tail hang'. Shorter chassis, but still longer coaches, are not a good formula in the wind. While add on components will help this some, these coaches will never be as good of handling in the wind, as those with better Wheel Base to Coach Length proportions.
And yep, many call it snake oil, but I've personally seen the improvements in especially shifting wind conditions, of using Air Tabs. I did do many of the handling components add on's and shocks to our 99 F53 18K Chassis (T-28 Bounder, so did not have much of a tail hang, compared to many I've seen on the road:)!).
If you find that the wind does disturb you while driving, and decide to improve suspension and handling, consider Air Tabs in that mix too. Not expensive, and even after all of the other mod's I made - they really helped too. Cumulative in my specifics.
And no matter what I had done to the Bounder, no comprising to a DP with Tag:)!
Best of luck to you,
Smitty