Mario Kart 7 Tips - How to Rocket Boost Start Guide

http://www.GameXplain.com The rocket-boost has been in every Mario Kart game, but that pesky timing always changes. Now only will we show you how to do it in Mario Kart 7, but you may even learn a few more secrets about it. Like us on Facebook:   / gamexplain   Follow us on Twitter:   / gamexplain   Circle us on Google+: https://plus.google.com/1080043484356...