Any Electronic experts who might be able to offer advice on a compact unit -combo GPS/Fishfinder? I went to Bass Pro Shop today to check out the coices and there were too many to chose from and walked our more confused than when I arrived. I am looking to pick something that is somewhat compact due to the fact I have very little area on my dash of my Sundeck . I don't want to by junk and I am hoping to buy a user friendly unit. Also does any have an opinion on Handheld ship to shore vs dach mounted? I appreciate the advice.