I am new to boating and would like some tips on which fish finder/ gps units are good for the money. They are a bit expensive, so I want to make the correct choice. Is a combo unit a good idea, or should I buy seperate units.I have a 1984 Balyliner fish and ski, 85 hp, and I fish in the Mobile Bay,Wolf Bay area. <br /><br />Thanks<br /><br />My boat is 16 ft, so I cannot go out deep. Mobile and Wolfs Bay are salt water. I can go up some of the fresh water rivers. If I get over 200ft of water, it would be rare. I have my (eye) on the Garmin 240 for a fish finder. Don't know about the GPS.<br /><br />Thanks