Getting a new Jump Rope that is adjusted to your height can make all the difference when learning double or triple unders.
Workout:
With a clock counting down from 10 min complete the following:
1000 meter row
With the remaining time complete AMRAP:
10 Sumo Deadlift High Pull w/ 95lbs
10 hands off pushups
10 Box Jumps
10 Sit Ups
* Your score is the amount of completed
Salois: 2 rounds (scaled to 53lbs)
Neitling: 3 rounds + 1 SDHP
Local 1592 Fitness Training 
Minnich: 3 rounds as Rx’d