I see these guys grind rails, do shifties and 3's etc. and they look like they have so much control over their skies and what they do. When I try a 3 my skis kind of flail and i can never land it. When I grind boxes my skis wiggle around and I slip out or slide off the box. how do I control my skis better? My boots fit well, and my skis fit also. any help is appreciated thanks