Hey Dan, I've hunted from pop up blinds in three states, on private and public land, including numerous NY counties and terrains.
My experience is this - First the most important thing is that the blind is not 'new' to the area. A blind they are used to is a lot better than one you just put up. Second, brush in the blind really well with native vegetation to breakup the outline and it will not spook the deer.
Oh yeah, couple more things .... don't wear camo in a blind .... wear black, it works MUCH better. And make sure you don't get silhouetted, all windows behind you must be closed.
I have many times closed up windows when I saw deer to setup for a shot.
In terms of the size of the blind, the pop ups are hard to shoot a trad bow out of. I did kill one out of a pop up using a 54" recurve, and I've shot up to maybe 64" bow out of the larger hub style blinds. For trad hunting, it's also important that the windows are not too high up or your bow will hit the ceiling. Hey need to be around midway up the blind for ideal bow positioning.