Agree with the sit/stay away from the door. We used to toss treats back into the house as we opened the door. Once they know the "escape game" you really have to work to make staying more fun than escaping. And no matter what, once you catch him, love on him. Never let him coming to you, or you coming to him, be a negative thing.
We have a fenced area around our front door, not terribly attractive, but safe. YOu might put an x-pen arrangement that you have to step over to get in and out, around the door, once he sees that he can't bolt, the sit/stay and treat toss will be more interesting.
Good luck! Where in Fla are you located? We are in the Tampa area and have a very nice basenji meet up every week.