This is a Kansas State Park, there is a daily parking fee and overnight camping fee.
The Yellow Loop offers more flowing singletrack and two backcountry camping sites (only one is marked)! The rocks get more intense as you travel north from the Blue Loop for a little while and then they taper off. The further north you travel, the fewer rocks you encounter until finally you're crossing over to the east side of the cove and you spend some time running field trails. There is another short opportunity to run more rock gardens as the trail heads back towards the lake front and then it hands off to the Red Loop.
The trees are well marked with yellow paint. Use the map or follow the yellow painted on the trees.