This new addition to the Fishin' Buddy lineup from Bottom Line represents the best possible solution for small-boat owners needing a portable sonar device. As with other Fishin' Buddy portables, this unit is totally self-contained: screen, gunwale clamp, telescoping shaft, and transducer all in one. This model includes both side-scanning and depth-scanning features and will run for about 40 hours on only three C-size batteries. (Almost all other portables use cumbersome 12-volt systems and suction-cup-style transducers, which don't work worth a darn.) The transducer shaft has too much water resistance for high boat speeds, but for slow-moving skiffs, canoes, and even kayaks, it's unbeatable. There's even an accessory mounting bracket available for float tubes. The unit is also ideal for ice fishing. About $170 from most major tackle retailers. Bottom Line/Computrol, Inc., Dept. FS, 499 E. Corporate Dr., Meridian, ID 83642; 208-887-1000; www.bottomlinefishfinders.com.