A. 6 rounds for individual times:
5 reps of sandbag-over-the-shoulder (clean the sandbag from the ground, and toss/push it over your shoulder so it drops behind you)
10 calories on the bike (substitute rower if needed)
10 sandbag squats (bear hug)
10 calories on the bike
Rest 3 minutes.
As you can see from the format and rest period, these should basically be all out sprints. Sandbags should be fairly heavy (90+ lbs for men, 60+ lbs for women). Work in pairs if needed.