I just purchased my first boat, a Tracker Grizzly 1448. I am trying to outfit it for fishing now and am seeking input on a fish finder/imager/sonar unit. I am a novice on the topic and know next to nothing. I will primarily fish gravel pits and reservoirs from 5-100' deep for bass, crappie, catfish, walleye/saugeye and muskie. It seems important to me to be able to see underwater structure and cover beneath the boat and beside the boat for when I am bass fishing in the coves. I practice the buy once cry once philosophy and don't mind dropping some coin for a good unit, but I can't justify buying past the point of diminishing returns. I usually find myself purchasing items that are considered reliable, quality, workhorse models. Please post any recommendations along with why you recommended a particular model. Anything you might be able to point out to assist a novice in understanding the ins and outs of fishfinders is also appreciated. Thanks.