the thing with mongo besides looking silly is that you use the same front foot to push and do flip tricks leaving the back foot almost useless except to tap the tail. plus on top of that your back foot while pushing mongo isn't ready to tap the tail till the front foot is back on the board so you can reposition the back foot to tap the tail. I see this as a waste. Its just far more practical to skate goofy/regular for the most part. unless down the road when the person is more experienced, switch comes into play.