My son, Jeff Larch, runs 2 12" units. One for Livescope and one in dedicated Perspective View. He has mastered using them in conjunction with each other in searching for the biggest slabs in an area. He guides crappie every day and he and his fishing partner Jared Fyock, just won the Mr. Crappie Invitational Classic taking home 1st Place Trophies and the $100,000 prize!