@taffy thank you. I have been working on that and finding the "perfect exposure time" varies with water speed and view angle, so I experiment a bit now before deciding on each final shot.
@ggshearron GO with what you have! Moving water is a blast to work with.... Especially if you have lots around and a set of ND filters. Even the cheap $30 ICE sets work OK.
but now I wonder if I should have waded out to the left to center the rock on the falls.... your thoughts?