Though he’s supposed to be in what he calls his play years now, Knoxville-based real-estate entrepreneur Steve Hall still finds himself working on vacation. After a trip to Belize, he got the itch to build something new and started meeting with developers. Hall hit it off with David Keener, CEO and owner of Vision Properties, and together they acquired an isolated tract on Placencia Caye, a private island just five minutes by boat from the mainland.
In December, after…

