Stop freakin' waving at me!
I'm afraid I have to agree.
As a professional, sailing passenger carrying vessels 6 to 8 hours a day, 6 to 7 days a week, waving to passing boaters is just a pain. Never mind that I might be talking to a customer, or to the pilot aboard that 856 foot container ship entering (or leaving) the port in the channel he and I must share, or one of my crew. Never mind that I'm responsible for the welfare of all on board 49 (150 or 250) passengers, plus crew and the vessel and have possibly thousands of square feet of canvas aloft, booms, gaffs and nearly a mile of lines to be concerned with; I'll just stop whatever I'm doing to wave to you and all the others, or be labeled an ass.
Honestly, I'm a bit more concerned that the tack you've just made leaves me nowhere to go other than into that wharf ahead or that you probably won't clear my 30 foot long bowsprit because you've misjudged the current.
"Gee, that guy's a real grouch for not waving, isn't he honey?"
Yeah, like I care.