I've sold a few bikes on Craigs list. I just tell them cash only sales in the ad and no test rides without cash in hand. I tell them I'll give them 10 minutes to test ride it and if they like it fine. If not and it comes back in the same condition as it left me they can have the money back. They wreck or damage it they bought it.
Your right though there are a lot of scammers out there for sure.
But at your size, who is gonna argue with you....
