The half ton thing gets posted every time the forum needs to up their ratings. Since there are F-150's with torque ratings from 265 lb-ft up to 475 lb-ft, the question becomes rather silly. Same way with payloads from 1,500 pounds all the way up to over 3,000 pounds. Which of these are you most likely to find on your dealer's lot and heavily discounted? hint: It will not be the HD models. Given that in just this one model, one has nearly twice the power and double the payload, including "half ton" in the question can be misleading or even dangerous.
However, since I have owned many half tons, I will put in my two cents. Assuming a middle of the specs half ton with some towing options, I limit myself to 26 foot travel trailers and 6,000 pounds of weight. These are conservative and make for a fun towing experience.
