Ok, I should have defined "Out of the way". By that, I meant that you should be able to grip your seat with your legs, but in the event of a stack, have it low enough to avoid high speed contact with your boys. Look at BMX bikes - no normal person could sit and pedal one of them. Gastro, you're probably old enough to remember that little spring-loaded thingy guys used to put on their seatpost - you just hit the seat QR and dropped the seat for DH stuff, then when you loosened the seatpost again, it would spring back into place.