You have two different paths that you can take. One is just to get an inexpensive non-mapping unit. Just make sure that it is waterproof. A hook-up for an enternal antenna would be a plus. You should be able to find a couple of models for well under $200 at www.garmin.com.<br><br>If you do decide that you NEED mapping, the best unit would be here:<br>http://www.navitrak.com/handheld.html<br>This unit is VERY expensive, but will allow you to use a scanned paper map. This is, AFAIK, the only unit that will let you do this.<br>