Towing a trailer heavier than the truck

Artum Snowbird wrote:
OK, I will call it a weight distributing hitch.

.....

I could go to 6000 pound, 7000, 7500, 8000. The question is, do I want to go stiffer, or go lighter when the tail wags the dog somewhat? What would offer the best handling?

Weight distributing Hitches (or, WD HItches) are generally rated by the stifness of the spring bars, like 750, 1000, 1400...etc.

For example, on Reese's website: Reese Round Bar WD Hitch
they are listing their hitches as 600, 800, 1200

How big is the trailer you are looking at buying/or bought? What's the advertised tongue weight?
I'd go one size up in the spring bar weight rating verses what the claimed tongue weight is.

How much tension you put on the chains also affects the ride and handling characteristics while town.