Your pic shows not a windbreaker but a popierdółka aka parody of one
That's a typical one from my windy North Sea island.
The Polish one in your pic is more a fence. Part of the psychology of exclusion. At least it doesn't have razor wire on the top.
Yes, possible, when you travelled alone
I've never done that at the Polish 'coast'.
As I say, people here are nesh.