For my F-150 the max cargo is 1411 lb. on the door post. From this I have to subtract;
• Two adults and a dog – 500 lbs.
• Fiberglass cap – 250 lbs.
• Tools, chairs and camp gear not in TT – 100 lbs.
• WD hitch – 70 lbs.
Total weight 920 lbs. This means my TT tongue weight should be no more than 491 lbs.
I am told that the WD hitch shifts about 15 % of the weight back to the trailer so I may have an additional 200 lbs. to play with but experience has shown that the 200 lbs. disappears pretty fast with various odds and ends.
I haul a 5000 lb. dry weight trailer and when loaded I am probably at or a bit over the recommended limit.
You can judge accordingly but I usually figure a half ton to be the TV for 5000 lbs. or less.