I'm not familiar with any of those scents, though Calico Jack is a high priority for me to try. But you might also consider trying Thalassa, Galapagos mermaid. Mine smells very salty, and the salt and marine notes are all that is apparent in it, while the other notes are either missing or fade into the background so much as to be unnoticable. As a caveat, however my bottle is one I bought recently off of Ebay and it is from the old Carnival Diablique release, not the current one, so it's possible the scent may have morphed drastically with age. I haven't had the opportunity to try the new Thalassa yet, so I have nothing to compare it to.
I love your username and avatar, btw. One of my cats is named Pyewacket, after the cat in that movie.
I admit, I've given some thought to trying the same thing, but I haven't gotten around to it yet. I didn't expect a homemade one to smell exactly the same, but I was hoping it would get pretty close.