Yep, I dont try to go fast with hay. 300 HP would be plenty....though I have more.
Would even be worse if no brakes on wagon.
At just 700# each, you're looking at over 16,000 (8 tons) of hay. My full sized 1 ton, weighs a little more than half that and I wouldn't be comfortable. It's not the ability to pull the load, but ABILITY stop the load that matters the most to me.
Would rather have exhaust brake and Alison/Aisin with downshifting and 4.30/4.88 than a HO engine.
Just picked up a 35’ 38,000lb gooseneck trailer with deck on the neck and I’m more of a 45-50mph guy that wants to stop real nice & easy.