I've bought and sold all of my RVs on Craigslist. When selling, I post the maximum number of photos allowed (24 on CL). My description of my RVs have been detailed and honest. At the end of the description I add a NOTE: Please, no commercial brokers, etc.
They email me via CL's anonymous address which is then forwarded to my own email address. Usually serious private buyers will email their phone number and ask me to all them, which I do.
We then arrange a place to meet. I never give them my residential address. I usually arrange our meeting in a public / active parking lot... bank, city park, etc.
Usually after meeting a potential buyer, one usually gets a Spidey sense of who they, what they're up to, but, either way, I play it safe as a sort of relief for myself, and it usually relieves the buyer as well.
If they're still interested, I arrange to meet them at my bank where the teller can validate their account and if the amount of purchase is available in their account, etc.