For frontside, get on normally, then grip the rail. Drop your leading ski's tail, drop your uphill ski's tip. have your shoulders facing the end of the rail. Once you are locked, pop dat shit and spin. Make sure you initiate the spin a little bit before you pop. Try not to pop off your heels, or else you will sliiiide of the rail when you land back on it. For backside, swing your arms when you are getting on, you it almost looks like you are going for a 270, or some sort of spin on the rail. Then just get on normally, and let your momentum move your shoulders to face the take off. When you can't hold your skis straight anymore, and you feel like you are gonna spin too far and do a switch nutting, hop and spin again. Dope shit.