Rocker guards definitely help but most of Coney is not that bad, the roughest part is the start off of Middle St Vrain, big hill, some rocks, and ruts. Right before the BIG lake (not really a lake more like a really wide creek) is a little rock garden area. Once your through the water it is mellow. I have camped up there at the top, right near the creek. Beautiful area and there is this awesome hiking trail at the top that you can walk.
Last time I was there we had a small group (4-5) out of town hikers walking up the Jeep Trail and made some snide remarks about us disturbing their peace as we drove by them as they had to wait for us to get through a narrow section. One of the members in our group decided to talk to them, with in a few short angry bursts from them we realized that they cant read the hiking trail sign at the start of Camp Dick. We informed them that "they" were not on the correct hiking trail that was a click to the north of the Jeep road. They then apologized and went back down the trail.