Kayak on the back of a Travel Trailer (?)

I carried two kayaks on top of my Jeep and drove it all around the country. I never had a problem with wind noise. I wonder what's causing that for you? I did have mine in a full covers so maybe that was the difference. I used a Yakama kayak rack. Might be easier to solve the noise problem than figure out how to carry it on the back of the TT. Also, I expect it will be subject to a lot of shaking and bouncing on the back of your TT.