Activate your hips, shoulders, rotation and back.
Activate your hips: Paddle on your back and 10 squats.
Activate your shoulders: Paddle on your back and 10 x 180° rotations.
Activate your rotation: Paddle on your back, lunges and 10 x 180° rotations.
While sitting straight up, hold your paddle parallel to the water. With your arms straight begin your rotation from the hips keeping your shaft parallel to your chest and the water. Twist until your paddle shaft is parallel to your boat. Now rotate to the other side and repeat.