the landowner on that stretch is very very private. he doesnt like boaters, so the possibility of harassment is always there- but he seems to be abiding at least somewhat by not obstructing the waterway, save for a few fish dams and one ag drop that the old bible mentions but the new one does not.
The Gate campground is actually the put in for the Gate->Redbridge section. i cant say for sure about business but given the number of folks in the area i would say its gonna be full or near full. theres only a handful of sites. redbridge has a few more but also fills up fast. other than that you gotta drive on some back roads to find dispersed camping, or head up the valleys out of Lake City until you reach public prop.
"Don't f$&@ing eddy out, just run it! Whaddya doin??" -LMyers