My 3000 has twin 5.7s. Drive it like a caterpillar... a caterpillar on ice. Stopping the throttles won't stop your motion so always keep in mind you may have to give some counter thrust when rotating, backing up, etc... Also, make sure your wheel is straight. When i was first learning, I hired a captain and he must've asked "is your wheel straight" 100 times that day. I know it's 1.5 turns from all the way over to straighten my wheel, and it's definitely something you should get to know on your boat. Lastly, don't forget you can still use your wheel. It's a great way to kick the stern over when you're 95% docked.
Yet I still end up bumping a piling in my slip most of the time... Do what I do and blame the wind!