Smart way to draw wobbly curves?

I am making a conceptual landscape plan where I am drawing these freehand doodle for showing hedges. It is pretty time concsuming and inaccurate to show curves like I'm doing with hand and an pencil. Even they would look neater than using mouse manually for each wobble.

Is there a better way to do this? I searched for such brush but couldn't find anything. I am searching for a trick that adds curved bushy wobbles to a path or stroke.