Firstly, OFB - great job!!!
However, I must admit to being a bit baffled.
In the marina's where I learned about boat ownership etc., it was kind of a standing courtesy that whenever someone arrived, at least one or two folk would stop what they were doing and go to the arriving boat's dock to take lines/toss lines or assist in whatever way they could.
I thought this was just how it's done - and I have continued that practice after having moved to a different area. (If I see a boat coming in that is short of crew or is having issues, I will go straight to the slip and offer any assistance I can. I don't give any direction or push any ideas - I'm just there if they want a hand - or not. When the macho types decline, then I move off and enjoy the show
).
In the marina's where I "grew up" into boating, we were sailors, and there were no dock hands etc, so everyone just helped everyone else out.
I don't want to start a fight, but I have noticed that at my current marina which is mostly power boats (and my trawler), this practice of helping out and being available for each other just doesn't exist - I thought it was just rudeness, but perhaps I just got lucky by being around real boat people early on, and I learned from some true Seamen.
I am usually single handing, and I am happy to see a neighbor standing at the ready as I approach, I don't need to stroke my ego and I'll take the help rather than scrape the boat any day.
Of course, there may be some folk who can be more hindrance than help - in which case a polite "thank you, but I'd like to try it on my own - to keep my hand in" will usually work.
P.S. On the occasion where I have assisted someone who is struggling, I have never been accused of being nosey or any other negative comments - I have only been greeted with gratitude.