I used the rubber plug Greg is talking about, and it didn't help with the side spray. My shield works very well for the motor side, but I can still see spray to the outside. It's not a problem though. I would have extended the right side, but I didn't want to mess with the tie down. If you are making one, I'd extend the right side also. If I didn't have the strap problem, I think I would have made a 12" wide shield and centered it over the transducer, and bent each side down some.