David, welcome.. I'm new here too. I think this is my second actual post.
I'm out West in Edmonton and your living next to the sea caught my attention (but primarily it was the BW as I"m about to do the same myself (just looked and no rain for the week though). I put in 110' of hugelkulture beds in my front yard last fall with a rainbarrel overflow swale alongside it. I figure some deep rooted goodness will help anchor the beds in place.
was just reading about sea buckthorn as I'm about to put in a pair myself (1 male, 1 female). They thrive next to the sea and tolerate salty soil quite well. They're grown in Canada so not to worry about that..
From what I understand, there should be a 10% male to female planted.
Awesome berries, super good for you, look amazing and can be used as an animal break too due to the thorns, but I'm totally guessing there.