If tubing and wake boarding is legal then why not trick skiing? Typically as you stated before, behind the scenes politicking is the way, and or a huge showing of support(letters and or attendance) . Back to your original request tricking is usually done at 17-18 mph. Done by children and adults form ages 3- 90, and is great way for families to bond together. The last random point, when this same thing happened with snow skiing, and snowboarding, were any legal presidencies?