[JRTJH]

This thread has certainly strayed from the OP's question: "I have an '05 F-350 dually pulling a 28' hideout TT. Will my truck still feel the "white knuckle" effects of the wind and passing trucks that a smaller truck does?"

It seems that the focus of the thread has shifted well away from towing a 28' light weight trailer with a dual rear wheel pickup and has become a "testimonial for Hensley"... It's been "touted" that if you don't have a Hensley, you're derelict in protecting your family and that nothing else compares. Whether those statements are accurate or not really isn't the reason for the thread.

Honestly, with the OP's truck/trailer combination, he would likely see no improvement with a Hensley over a properly adjusted "clamp-on sway bar".

Let's not lose sight of what we're supposed to be discussing. It's not whether a Hensley is worth the investment or even if it works, rather the topic is: What's necessary for a dual rear wheel truck towing a 28' trailer?

The "real answer" to his initial question is, "No, you probably will not notice any significant difference in towing and sway control with or without additional anti-sway devices, but you probably would benefit from a weight distribution hitch."