I tow a 6500lb trailer, tongue weight 650lbs. Squats 2"'. Tows nice and straight at 65mph no sway. Just installed Sumo Spring spacer, have not towed yet with them. 2019 XLT HD tow, FX4 package. No need for WDH.
John...IDK know if that means you're not using a WDH. If not, here are my thoughts...
Four and a half years ago, I upgraded my wife's ride to a 2016 Honda Pilot (AWD). Had the max towing package put on that which netted me 5000# max towing. At the time, our camper was one of the biggest pop-up campers you could get and tipped the scales at about 3500#, loaded-up. (I assume the hitch weight was the fairly typical 10-15% of GVWR.) I towed that TWICE and immediately went out and bought a 3/4-ton diesel. I probably coulda got a $300-$500 WDH and found out I would have been very happy towing with the Pilot.
Well...fast forward 4.5 years. We now have a full-bodied camper that is quite close to your trailer / tongue weight. I made the decision to sell my Duramax after the wife was clearly not in the mood to trade-in her Pilot for an Expedition. But 6 of us in my CCSB Duramax just became way, way too annoying for my temperment. Anyway...I did it, I sold my Duramax and found a holdover 2019 Limited 4WD (with HD trailering package)...and immediately purchased a Husky WDH (that is actually rated for 800-1000# tongue weight...I believe in "going one up" and while that is not highly recommended with WDH's ...I did it anyway and am quite happy.)
So...just ONE camping trip in thus far (have only had the new Expy for 11 days) ...and I might never tow a 5000#+ trailer without a WDH EVER AGAIN (on a rear-mounted receiver). After a lot of research and watching installation videos, I was able to setup my Husky WDH very nicely and I only got 1/2" of squat in the rear and the front stayed exactly the same. Our camping trip this past weekend was a huge success ...towing wise. Here in AZ the temps were ridiculous (at almost any elevation), and the highway winds were brutal. Even though I could certainly feel the weight of our 6200# camper, it towed like a dream with the WDH ...probably better than my 3/4-ton Duramax without the WDH. (I had airbags on the rear axle of my Duramax and that helped, but not as much as I had hoped.)
Anyway...I am a firm believer now (after towing 3000-7000# over the last 35+ years), that a WDH is an absolute necessity when towing ...either over 5000# or when towing anything near 70-90% overall towing capacity).