Weeds and Fish can look the same on sonar. I have some examples on new technology to demonstrate the difference.

Saginaw was like pre-fishing for 2 different locations. Saginaw Bay had a open water bite using boards and spinners to catch open water walleyes. The fishing was good but the size was not winning fish were I found them. I used Nightcrawler harnesses with purple blades and Northland holographic silver blades working the best in sizes 3-5. The river was flooding and very muddy for most of the pre-fishing. The river cleared up 2 days before the tournament and I caught some walleyes trolling crankbaits and pitching the shoreline with a jig and Slurpies but I didn't have enough spots to gain confidence.

Brimley had fish close the take-off and I found better fish 50 miles from the launch but I had to pass through the locks and in hindsight, I should have made the run as there was no wind. I am not up to 50 mile runs in windy conditions; I leave that for the tough guys. It was an artificial only tournament and it was painful to see local anglers catch more fish with nightcrawlers while I used artificial baits. It was no contest but it is what it is. The locals were wondering why the pros couldn't catch them!!