Cliffs

Starting at the end of the pool below the powerhouse, a slight left turn pushes most of the river's volume against low cliffs on river right. Easiest route is center to way right into a huge eddy above the cliffs then right to left into an even huger eddy on left. Some prefer a left line through the waves but with that much water pushing against the cliffs you've got a set a fairly hard ferry angle in waves....beginners should  stay off the cliffs.

Long boat challenge (while you wait for everyone)- attain to the first big eddy on river left.

Small boat challenge - Hit the eddy's under the cliff. There's at least 3.