Waggle not sway....

Sounds like you are on the right track.
Get a longer shank so that you can tow level or slightly nose down.
Increase you tongue weight.

Are you using any kind of sway control? If not, probably a good idea.

Do you have good LT tires on the 150? I had a bad waggle pulling my 6500 lb. trailer with my 1500 Silverado with the factory P rated tires and putting new LT E load rated made a huge difference.

I agree that those things are worth testing. Another question I'd ask is what type of tire are you running in your TV? When I had P-rated tires I'd get a little wiggle on occasion due to their soft walls. Switching to LT-rated tires eliminated that. Just a thought.

Ken beat me to it!

I have Michelim LTX A/S tires on my 150. Thanks for the info ya'll shared. Best thing is to hook up and run up I-10 to see.....Just wanted to see if I was at least on the right track, seems I am. And yes,I'm using a friction sway control bar.

Increase the tongue weight, it cost nothing to move some inside stuff forward and test. Then you can do the leveling. oops, check adjust of the WD hitch.

If you add water, fill the tank all the way. A half tank can cause "waggle" as it has room to slosh around in the tank.

camp-n-family wrote:
If you add water, fill the tank all the way. A half tank can cause "waggle" as it has room to slosh around in the tank.

Yes water tank full or nearly empty. Anything in between will counter every movement of the steering wheel.

Bayoubass wrote:
I pull my Keystone Hideout 19FLB, 4200lbs dry with a 2014 F-150 , 5.0 litre, tow package. Most of the time it tows nice and straight...a fair cross wind...a semi to blow by and I get enough waggle to bother me some.....I am just a tad high on the hitch but I'm on the bottom of my EZ lift W.D. hitch shank.

Getting the trailer parallel to the ground while towing is mission #1. Definitely get a longer shank so the trailer sets properly.

More tongue weight? That can help too and as others stated is free to try.

If you still get a wiggle after that, you might adding sway control. I'm not a fan of the add-on friction bars. On my old TT I used an Eaz-Lift hitch head with a Reese Dual Cam system. My trailer was almost 35' ball to bumper and would catch some pretty good cross winds. With the dual cam system I would get pushed, but the truck and trailer moved as one unit. In 10 years of towing I don't recall a point where I felt sway or wiggle.

Do your WD bars have a bend (cam receiver) molded in the end of them or are they straight? If your bars are straight, Reese used to sell Dual Cam Model 26001 which came with adapters to convert straight bars too have a cam receiver. That is no longer for sale new, but you could possibly find a used set. If you can't locate and old model then you can purchase new WD bars with the cam receiver. That's what I did with my Eaz-Lift hitch and found that DrawTite round bars fit just fine.

If your bars already have a bend in the end you only need to purchase and install Reese Model 26002 Dual Cam System.

KJ

As others have said, go lower on the hitch and heavier on the tongue.