It was not designed to be a odd way to quickly scoot across the mat during Brazilian Jiu-Jitsu class.  It was designed to help you move your hips.  Keep shrimping my friends, it is not a race.

The Shrimp Crawl

Many BJJ students race across the mat at full speed.  Focus on curling your body and getting a lot of hip movement.  “There are many different kinds of shrimp” Bubba from Forrest Gump once said. Try these different shrimps: using one leg, both legs and shrimping with the opposite leg.  Feel the difference from shrimping with a flat foot and shrimping with your toes.  Try moving your feet close to your butt and then try shrimping with your feet at a distance.  All of these shrimps will produce a different result.  From white belt to black belt, everyone uses the shrimp to escape side control and mount.