Don't trust those things. If you use one, stuff a rag in the boot behind it. My friend was careless with one and lost a motor from water getting past that he did not notice. It ran down the boot, through the carb, and into the lower end. I have some extra foam blocks I stuff in the holes between the seat and side panels, works fine in keeping excessive wash water off the filter. Most of the time though I swap the filter anyway after a ride.