Humiliating Question

[Darkpaladin]

I think the biggest key to hitting the triangle is to get perpendicular to your opponent. It tightens the choke, makes stacking twice as hard, facilitates pulling the arm across, and throws off their balance. It's the big counter to the stack, but if you get it before they start mounting a defense, then it's just one less thing to worry about.

[Ryno]

Yep, that definitely helps. They're still in a pretty strong position if you're too much straight up with them. And if they're big, they'll stack you. If you're perpindicular, not only does the choke hit them better, but they're tippy and will have a harder time standing up to stack you.

[douubleouch]

Stack defense. Place your palms on your knees. Push

[Cassius]

A more effective stack defense (at least for me): Learn to "walk" with your shoulders. Your opponent will end up pushing you across the mat without improving his position in the least.

[douubleouch]

This does work well. If you are already stacked though it can be hard or impossible to move your shoulders because their weight is pushing down on them. I think the walking your shoulders would be an early stage defense, and the pushing the knees would be a later stage defense.