Overshoot, and I ripped my ACL off the bone last year overshooting the fuck out of a 7. Undershooting bad almost gives me a heart attack, you can tell as soon as you go off the jump that you aren't going to make it and my heart just drops, it is so much scarier. At least with overshooting you can brace for it and open up and such. Also, it does look alot more bad ass, face it, bad ass or not being bad ass, which would you take? And also, I almost only overshoot when I am going to land switch, and everyone knows that landing switch is alot easier/ less risky when overshooting than landing forwards.