Hello,I know this topic has been covered before, but I am looking for a handheld marine gps. I want something that can handle a splash or worse. I want something with mapping capability and charts that can be loaded in. I'd rather not spend more than $400 for the unit and the charts.I found the Magellan SporTrak Pro Marine, but it seems to be out of stock at most places and I am thinking maybe it's being discontinued (anyone know?). I am in the process of purchasing a Hunter 25.5 so there is no real place to mount something larger than a handheld. Plus anything else would be out of my budget.Any Suggestions?-- Jeremy