hello i have been BMXing for about 6 years, but after dislocating my shoulder and requiring surgery on it, and recently rupturing my ACL ligament (doctors think), both on the BMX, im selling it and moving on to something else. i have done some trials on a friends bike and have considered getting my own bike for a while. question is, is trials any safer than BMX? or am i still just as likely to knacker ligaments, cartilage and myself in general?