People ferries and water taxis use a similar technique when they make their quick unload/reload stops.. Usually in fwd gear and the rudder turned away from the dock.. Thay basically motor against the spring line holding themselves on the dock.
Have Watched it many times.
My dock neighbor has perfected this technique as he has limited steerage.(he singlehands) I have used at it at the home dock on occasion. (while singlehanding) Once in a while i do come in hot due to weather conditions,BUT, my boat handles extremely well and i can stop her on a dime. I have confidence in my motor and the boat. I go around if i don't think i have it right.