Mercury - Vented Splash Cover Verado Series Black Polysoft II Fabric 8M0228520. Overview. Some days on the water are calm and glassy. Other days, you're running through spray, bouncing off boat wakes, and watching windblown mist coat everything in sight. That's when you realize how nice it is to have protection that's made for real boating, not just for sitting at the dock. This vented splash cover is one of those quiet upgrades you start trusting fast.. It's not about babying your engine. It's