Nothing fancy about this unit -- other than remarkably easy to use interface. Its not possible to do better in this price range.

The Garmin eTrex GPS works well (superbly well) for sea kayaker. It's waterproof. You can pre-plot a destination if you know coordinates. You simply utilize "go to" feature and eTrex points way.

Like most modern hand-held units, eTrex generates its own map of your movements as a visual tracklog or 'breadcrumb trail'. For retracing your steps ('Trackback' mode) you will see all detail you will ever need.

FFR Did you notice better performance in shallower waters? JWR I have version with dual-frequency sonar which is made for deeper waters, to a depth of 1500'. There is a version of Garmin 250 with single-frequency which will be better for shallow waters, and its cheaper too!

FFR Have you customized your 250 fish finder? JWR I have connected a Garmin GPS receiver (which I bought separately) to unit. I can now mark waypoints directly from Fishfinder's keypad.

FFR So is 250 a fish finder that is easy to use? JWR Very easy. It works out of box, so no complicated set-up. It's very slim so it doesn't get in way when its mounted - I've got mine on bow. Its mounted on a swivel so that it can be viewed from any angle. The buttons are easy to use, too, even with gloves on.