Water Tunes

Whether you use water skis, tubes, kneeboards or wakeboards, the truest test of the powerboat that tows you is its sound system. The new wakeboard tower audio system from Infinity ($1,100; infinitysystems com features an amplifier and waterproof speakers designed to pump high-decibel music up to 50 ft. past the stern--even when you're knifing full throttle through the water. The system includes a microphone that enables people in the boat to talk to whomever they're towing. It may not improve your water skiing, but at least you can have a good sound track.