I would bet money not a single person can give a legitimate reason how Mongo is bad. i push both. its whatever my feet feel like doing. Because riding isn't school, it is something that should just flow, not be something to be nit-picky and concerned about how your doing it. On a skateboard it makes sense no to push mongo, any one who has rode a skateboard will understand, but basically a skateboard has trucks that wobble, a scooter does not. so whether you push with your front or back foot it does not effect your riding at all besides the fact of someone saying "o you pushed mongo". It isn't a skateboard. if you wanna be a skater go ride a skateboard, its no harder. you might as well start telling football players to stop tackling because you cant tackle in soccer. doesn't even make any sense to mix one sport into another.