You can leave your blind behind as well... but like these guys said, first come first serve.
I've made countless blinds out in the Potholes, and many of them get poached the next day.
No big deal, they got there first, I just make a new blind the next day.
If you are hunting a walk in spot, an easy method would be some thick gauge turkey wire fencing, about 2-3 ft tall and maybe 6 ft long. Carry this in with you and just fill it full of grasses and twigs and any vegetation you can find. Takes you about 15 mins, but it's super easy, and makes a great little spot to sit behind. at end of day, just shake all the grass and stuff off of it.