In all my years hunting I have pretty much known just where I was, there were a few instances where I was slightly confused. But as far as private property was concerned I always knew if I was on it or not and always tried to avoid it if I could.
When I first started hunting over 50 years ago in Utah the private needed to be posted, and I got called on it a few times when I would come into the property from the backside where the owners didn't think that they needed to post it and to my surprise when I got to a fence along a county road and saw all the No Trespassing signs.
Colorado on the other hand you need to know where you are at, no fence required or signage. But I do appreciate those who do take the time to actually put up and maintain their signs.