Clockwise is the best way to ride this loop. There are several intersections with other trails in the network, but they are well marked. It is easy to find your way around this loop. Precipice, and Sidewinder are two short extension that you can easily add to this loop. Take a look at the map at the trailhead and decide for yourself. They are a little harder than the main Barrel Roll trail, but fun.
At about 3 miles (ridden clockwise) the trail drops into a short technical section that demands advanced riding skills. It's fun, but walk it if it's above your skill level.