The two paddlers in a two person canoe (C2) must coordinate, and unless something interesting is happening, make their strokes simultaneously. Have a look at some brief tips:
Learning to paddle a kayak is easy. Power in paddling comes NOT from the arms. It comes from trunk rotation, with arms little more than linkage between power source and paddle. Control of the paddle does not come from brute force. It comes from the right stroke being applied in the right direction at the right time - it's all done with coordination and balance. Have a look at some brief tips: