MIAMI – There is clandestine and there is stealth. For the Miami Heat, both came into play as they prepared for the NBA Draft and what they might do with their No. 18 pick on Thursday night . . . if they retain it. As has been the case during the franchise’s best of times, particularly during the team’s Big Three era at the start of the previous decade with LeBron James, Dwyane Wade and Chris Bosh, recent weeks meant juggling workouts with prospects and the playoff schedule. While the Heat rarely have made their workout lists public, this time around it also meant getting prospects in and out of the Kaseya Center amid the media barrage of the NBA Finals. “We made sure we have the schedule from the team first, and the league, the use of the building and different locker rooms and whatever space we have,” Adam Simon, the team’s vice president of basketball operations and assistant general manager, told the Sun Sentinel.