You make some valid points. I do use a GPS on occasion to find brush that I placed in the lake. Placing habitat does increase ones odds of putting fish in the box, but it also helps the fish by giving them cover to protect them from predators, places to spawn, and structure to just hang out on when they are the hunters not the hunted. I only fish once or twice a week so the brush is more of a luxury to the fish than to me. I do not use a sonar to find or locate fish though. Mostly for depth and water temperatures in the spring. Live Scope is specifically designed to target fish that associate to structure. It will shine in late spring through fall, not as much during the late winter through early spring when the fish are on the move.