Brace

Also: low brace, high brace

With a brace you stop the boat from tipping over by slapping or pressing the paddle blade flat on the water.

Wikibooks distinguishes the low brace (slap the paddle flat on the surface quickly) and the high brace. The high brace isn't recommended for beginners because it can injure the shoulder. Important: keep your elbows below your shoulders; your hips right the boat, not your arms.