On Tuesday, June 17, 2014 2:45:46 AM UTC+12, Waveguru wrote:
When tying down a glider, should the stick be tied back, with the elevator in the up position, or should the stick be tied forward, with the elevator in the down position?

If the tail of the glider is tied down then it's not going to make the slightest difference which way you do it. The only consideration is that the controls not be able to flap around. If you can do that by tying the stick forward then go for it, but it's usually much easier to tie it backwards. And don't forget, you're immobilising the ailerons just as much as the elevator.