Mine's been mounted at about 30 degrees for a couple years and it's worked great. And this is not a smooth riding vehicle...it's a 15 yr old SUV. YMMV, so don't blame me if your drive goes belly up. It comes down to the fact that I'd rather be able to see the display on my Empeg and replace a hard drive occasionally should the need arise. Luckily it hasn't.
_________________________
~ John