Koontz Flume is the first of the Class Vs on the Lower Gauley River. The main feature, which you will want to avoid is getting pushed right into the nightmarishly undercut house-sized boulder. It can fit a raft, and being pinned over there could really spell disaster.
Koontz begins entering just left of the diamond-shaped rock, which requires plugging a pretty sizeable wave. After getting through this wave, regroup and make sure you aren’t getting pushed right, then blow up the big stuff.
Below this rapid is a large pool, so carnage is not the end of the world if you are clear of the main right bank hazard.