backing a crealock
I agree with all the input. The first thing you need to learn about backing a Crealock, is where to put those 16" round "crash" bumpers.
And, don't be afraid to use them!
When you do get some travel going in reverse, you need to apply the rudder turn slowly, picking up speed on your turn as you begin to feel it bite. You are right in thinking you prob. stalled your rudder by turning too much too soon.
And the advise to learn to back these boats, in calm water, with soft objects as references and most important; when you don't have to. Rested.
One of our trainers insteaded that you learn to back up, by watching the bow.
He would have us start backing, watching the bow move as we slowly started turning the wheel. Works.
The other thing he had us do, was to get into a wide docking area, dead stop. Turn the wheel full starboard, fwd throttle>reverse>fwd>reverse. Using the prop wash to spin the boat in place. Stop, wheel full Port, repeat process and learn how to use your prop wash. (More bumpers)
If you have the time and money, going to an outfit like San Juan Sailing Yacht training, and telling them you want 6 lessons in dock handling is worth every penny.