Using the wind and current
I have a single screw, 42 foot displacement trawler. One Ford Lehman, on big rudder.
I am berthed with a slip where the current runs up to 6 knots up river or down river depending on the tide. The down river current is faster. The current runs fore and aft, my boat is pointing up river when berthed. The wind is usually blowing on the beam. I am 4 slips in from the open water.
Leaving is easy, I usually leave on a falling tide and when I back up I can just pivot with the current and turn and exit with no problem.
Coming into the berth is difficult. I am always coming in with the tide, although I try to time it at high slack, and the current is pushing me into my berth. This often kicks my aft end away from my dock. I dock port side in when going in forward.
What I find I have to do is line up really straight before entering my berth. When I am positioned out side my berth, lined up and straight I have time to make a better attempt at berthing.