Piggy-back skating

Today's surprise discovery. Skating with someone on piggy-back is really, really hard.

I've been skating on and off for about ten years and am reasonably decent at it, even teach it. In terms of strength I can deep squat twice this person's bodyweight (=2x55kg). Yet, skating with her on my back was seriously challenging: you have no hands for balance, the glutes and lower back are working like crazy being leant forward so far, and to support the weight on each foot for more than a moment requires demonic ankle strength and coordination. Give it a try...