I've been kinda down on the Cowboy Trail the last couple years. Bike traffic seems to have gone way down. Horse traffic, on the other hand, has stayed the same and maybe increased a bit. The horse peeps seem to cut out larger trees on the trail, and anything the horses cannot step over. That however, leaves a lot of lower lying trees that bikes cannot get over. Every year I go ride, I pack a saw, and clear out some of these low lyers (is that a word?). It has been pretty obvious that bikers are not using it much.
The road down the reservoir has a nice new roadblock, I assume it is for motorized vehicles only. Definitely worth the ride down there for the view.