This idea just seems like it would be a tough blind to place. I think that wary birds flare from large vegetation and blinds no matter what(with the exception of timber hunting). Thats why layouts revolutionized the sport.
Layouts cannot be beat in regard to concealment. And yeah, birds learn to land where it is safe, this means away from cover or where cover is low, especially on public.
It is just hard to drink coffee and shoot the BS in a layout blind, I’ll be shooting out a permanent blind when I want to enjoy the social side of duck hunting or just want to take it easy, and I’ll be hunting out of a layout blind when I get made at the ducks.
But even if you have a permanent blind, if ducks like that spot and you do not over hunt it (private spot), then that blind will just become part of the surrounding. Example, you have a spot with a permanent blind that ducks like, once a duck lands in the spot and is not shot at, then the duck will most likely not hesitate to land there again the next day, especially if there are many other ducks in the same spot. Example, this spot here pulled off the website above:
You hunt here the next day, you are going to hammer some ducks. And if you get your limit and get out of there early, by the end of the day, that spot will be loaded with ducks again, and if you let a spot like that rest for several days in-between hunts and not overhunt it, then you will do good with that blind.
What amazes me is some public spots that just get hammered every day, it’s surprising any of these places hold ducks. That’s why I like regs on public land for no hunting after noon, give the ducks some time to rest.