My Gitzo Studex Perfomance has done a lot of beach time since I bought it in 1983. I use a Gitzo ball head now, not sure the model. Plenty big for my Rolleiflex that has also seen a lot of beach time. It is pretty much always windy in Oregon on the coast.
The good thing about a Gitzo is that it can be completely taken apart and cleaned and oiled. I have done that twice in my life.
Dennis