The usual suspects:
Row for Calories and the Prowler (to the shed and back)
Since there was two of them and their work capacities are matched well across broad time and modal domains, I pitted them against each other. Which elicited peak performances!
Row for as long as it takes the other person to go to the shed and back with the prowler, for max calories. Rest 1 minute, switch positions.
Repeat 14 times so each person gets a total seven row sprints.
Awesome workout!! Great intensity and camaraderie!