To successfully pass the mission, finish the course in posted time, shoot 4 of 5 targets and don't hit any breakables. To earn a commendation, finish the course with 20 seconds remaining, shoot all 5 targets and don't hit any breakables. When taking the jumps or the turns, slow down a bit so you don't crash into the cones because if you knock just one over you'll have to restart the mission. Be sure to press up on the D-Pad to auto-aim at each of the targets and slow down if necessary to be sure that you get at least 4-5 targets.