Retro 177 and sway control

I know this is old but wondered what you ended up doing for sway control?
We just purchased a 2015 Retro 177. We downsized from a 30ft trailer and the Blue Ox Swap Pro we used before is to much for the Retro. Our dealer said we did not really need any sway control for this trailer??
Anyway loving the Retro.....