Have Practice and Ranked Group play with the option of Stroke and Match play. Any disconnects have 60 seconds to rejoin or the match is lost and goes against their ranking. Match play is one on one, while Stroke can be group.
The group play feature has little or no game play value since most people are disconnecting as soon as their round turns south. This should be the most entertaining feature as there is no better feeling than sticking a 200 yard approach and draining a birdie to go 1 UP on the last hole.