Towing Travel Trailer without WDH from Dealer

allanstewy wrote:
Newby here.

So I'm looking at a Flagstaff Micro Lite 21FBRS. 22.5 Feet, 4,215LB Dry with 412 LB Hitch weight that I need to tow about 500 miles from dealer lot.

I wouldn't get a wdh for it at all, likely. You will certainly be fine towing it home. There is a common misconception in much of the Travel Trailer community that a wdh is like required gear, pretty much regardless of the pairing.
I believe it stems from several things, not the least of which is new, inexperienced people being persuaded by RV salesmen.
Before the wdh cops try to arrest me, yes I understand that some situations require it due to the weight of the trailer and the capability of the truck, and similar for sway control systems.
And I also "hear" that it is a much more "relaxed" towing experience.
IDK, never used one, but I've towed various size trailers from 500lbs to 20,000lbs behind most every kind of pickup in most every kind of road/weather condition and have had very few "white knuckle" drives. Sure, can tell when the trailer is a little pudgy for the truck, and can really tell when you're grossly overloaded or have far too little tongue weight, but none of that is the case with your trailer and truck.

That said, a 2 ton trailer with only 400-500lbs tongue weight behind a new F150, any model is somewhere between just fine and childs play for the truck.

Have at 'er with confidence. Hope this helps.