Yeah, I was thinking East coast as rail/shore bird hunting was pretty popular through the early 1900’s there. I have an old 1950’s sports afield magazine somewhere and there was an article from the authors recollections about hunting rails with and old guy when he was a kid from an old skulling boat in the north east perhaps Maryland or New England, I can’t recall. Of course it’s just a hunch and will most likely never know where it originated but as an avid waterfowler who lived on the east coast in my teens and early 20’s and now resides in the best waterfowl habitat in America, North Dakota, it speaks to me.