Remember all those World War II U-boat movies in which the submariners are sweating and holding their breath while the pinging PT boat passes close overhead? Drop a pair of pliers and BOOM! Their day was definitely ruined. Many anglers seem to forget what those guys understood: Silence is golden, especially when it comes to depth-charging a few lunker bass, trout or muskies. As with submarines, a quiet boat is a lucky boat, and you can do a lot to make yours luckier.