Some may think this is a total BS story, but it is my experiences at the Carlyle subs.
I hunted at the Carlyle walk-ins in the `70's. I hunted there a couple of times a week, from `74-78. I only hit it a few times from `79-`81, when I left the area. I only hunted weekdays, so I can't attest to weekend pressure. I never hunted the lake and never checked out the boat ramps to see how many trailers were there.
In those days of old, it was rare to see another vehicle in the parking lot. If there was, it was usually a holiday Monday or a Friday-someone making a 3 day weekend. One other vehicle in a lot was rare, two or three was a traffic jam. I can count the number of hunters I encountered without running out of fingers and they were usually friendly. I saw and talked to more Corps rangers and Il. DOC (now DNR) employees than hunters. (They checked out the parking areas, listing for shooting, looking for empty hulls or duck feathers, so they could tell hunters calling in if there is much harvest.)
By `81, I noticed a difference. There still wasn't much weekday pressure, but you might have a vehicle or two in the lot. You could tell there was more weekend pressure by the trash, etc. around the parking areas. Plus, what few hunters that were encountered were less friendly, more closed mouthed, secretive and surly.
I can't say that I really slayed the ducks, but there were always more than enough shooting and ducks to get me to go again.
From the stories I hear about nowadays, I'd give up waterfowling before I'd put up with the overcrowding, fighting, hassles and BS that seems to be the norm at Carlyle.
Semper Fi, Marines
Casey 1997-2011 RIP