You can try this, but...
Here's one thing you might try:Back out as straight as you can, and don't be shy with the throttle. Get moving!When you reach the point where you must have the stern to go to staboard, crank the wheel all the way to the left (yes, to the left) and push the throttle forward (yes forward). The combination of left rudder, forward prop, and prop walk will throw the stern to the right very crisply, and it will put on the brakes at the same time.Since you are already backing up fast, you'll continue to back for a while since you have a lot of "mo" working for you. Just before you lose your sternway completely, you want to get the prop going slightly in reverse and get the rudder back over to the right. Will this push the stern far enough to the left? I don't know, you'll have to try. Is this a complex maneuver? Yep, sorry.Remember, your boat will turn to the left very nimbly, especially when the prop is turning forward. It will turn almost as well to the left when backing. Try and figure out docking and departure maneuvers that will use these two characteristics to advantage.The advice to back into your slip is probably worth heeding. Just find a way to back in as you make a left turn, and it'll be easier than you think. Plus after backing in, you'll have parked your boat in the "party position." Good luck.