My paddle boat will only turn to right. Will not turn left. How do I fix it?

My paddle boat turns only to right. Will not turn left. How do I fix it?

Brand and model would be a good start.

Control on a paddle boat is by rudder. Do you have a tiller or a wheel?

I was going to be a smart a$$ and say "paddle on the other side". LOL.

Just thought I'd make you guys laugh.

Obvious question here... but did you check for obstructions hanging down blocking it on one side of center?