Just saw an all white F29 at Windsor coming off the water. I coulnt help but notice that (Had #6 drives) there were long rubber like tubes (looked like HP hydraulic hoses from a big excavator, 3" or 4" in dia.)about 3 feet high that were attached to the back of the drives sort of like a drive shower but the angles were facing rearward, What are they for????????? Thanks, NSF