Thanks Men,
Think I'll try your trick Rodney if the current render looks funky to my eyes........nice idea too!
Oh, I may have not been clear..I want a fast moving object in the scene to have MB ,but with test MB renders I seem? to get MB on my ocean movement which is moderate movement/motion.....
Also rendering out separately is a good idea too, but never got comfortable with multi renders and compositing......that is, yet
Thanks
Mike C