I would want to be safe, but I also see quite a few people that seem way to conservative on towing with a half ton (one guy that does reviews on YouTube said he wouldn't go over 6500 GVWR for a half-ton, which seems too conservative to me). Here are the numbers for my truck as best as I can find based on the specific configuration of the truck. I got these numbers from the label in the door jam, and documents on the Ford website (except for curb weight which I got myself).

Curb weight: 6200 lbs (I actually had the truck weighed when I bought it as part of the registration)
GVWR: 7700 lbs
GCVWR: 17,100 lbs
Towing capacity: 11,100 lbs
Payload capacity: 1,840 lbs (this is higher than GVWR - measured curb weight. Is that normal?)

Based on these, lets take a sample travel trailer with the following (this is the heaviest I have considered):
Dry weight: 6765
GVWR: 7950
Hitch Weight: 745

Lets also assume:
Passengers: 550 lbs
Other cargo in the truck: 150 lbs

That means that towing this trailer with my truck, I would have:
395 lbs available payload
GVW of 7645 lbs (which is under the GVWR of 7700)
GCVW of 14,850 lbs (under the GCVWR of 17,100)
And under the 11,100 lbs towing capacity

So this trailer should be within the safe range to tow with my truck, right?