Sean
You are probably right, he did more inland courses, but he did his fair share of seaside courses: Turnberry, Troon, Troon Portland, Shiskine, Seacroft, Felixstowe, Arbroath, Southerndown, Le Touquet, Goswick, Whitsand Bay and Donaghadee. There weren't too many architects involved in more seaside designs.
I think Hunter was the original architect of Troon in the 1870s and Fernie oversaw the course in its formative years. According to the book on the courses of Braid he rebunkered it in 1926. I know a painting of the 'Postage Stamp' is featured in Darwin's in 1910 book on British courses.