If you can come up with a list of features/size/models that you desire and post that in the campers
for sale or wanted to buy (use WTB in the
title of post) you may get some responses.
Simple solution that can reduce the risk of a scam is ask for a picture of the
title to be sent. You need the Vehicle ID number in order to insure it if you purchase in order to drive back and title will provide that. You want seller to have a title which the photo helps substantiate. Anyone can download pictures from internet and claim to have a camper
for sale. State titlle is a bit more work to fake.
One other thing that helped in my case is many credit unions have affiliations that will allow you to access your local CU account at an out of state Credit Union. In my case the seller was on the up and up, and a pleasure to work with. Went to CU, notary for the bill of sale, cash withdrawn as a cashiers check in front of the seller one stop took care of the whole process. Had proof of insurance because they sent picture of title so I could go to my insurance agent and get that.
Other folks don't mind carrying cash. Buyers of our 13 ft did that. That works too but makes me nervous to carry more than a few hundred bucks in cash.
I think most folks knowing you have to drive a distance to see and purchase the camper are willing to hold it for at least a few days to give you the chance to get there. That is where the WTB post in the forum sales area comes in. People may reach out to you before they post it
for sale. The more you can narrow down requirements without going overboard on "only" want specific models features or items. Unless of course you have desires that are that specific, the more likely someone will decide to see if you are interested in theirs.
One of the scams out there is paying for delivery, camper never arrives. There are professional, insured freight and vehicle haulers. If the seller offers delivery and then gets upset or pushy when you mention contacting an expiditer or freight service that would make me suspicious.
Towing with an F150 should give you a fairly wide range of models that are suitable weights for towing. in a WTB post I would mention
weight limits, desired size, amenities such as shower you require, any manditory specifications or amenities. See what responses you get. People may well be thinking about storing with the idea of selling next spring during peak. You might get them to think about selling it now rather than deal with storing for the off season.