My solution to getting off docks is to motor forward against a spring
line with the helm hardover towards the dock. The propwash will kick
the stern out, at which point you can clear the spring line and
reverse out to open water. Works for me.

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With the wind holding you fast against the dock, that is indeed the
best way, in my opinion, to get away.

You don't mess with a spring line when there's a moderate wind on the
dockside beam, do you?