Knife's edge is full of potholes and other obstructions that can easily hold your boat as this pinned canoe aptly demonstrates.

The most common route taken starts out on river right and makes a left hand turn just above the stuck canoe and over a little drop. Then make a quick right hand turn which will line you up alongside the long smooth rock. Another less common move has the boater staying river right and boofing (just to the right of the stuck canoe) into the pool below.