I was out of the NE side again and was surprised with the amount of boats out fishing this last weekend. I agree, the fish are biting and look a little skinny and could be post spawn. This weekend was the first time that we caught fish out of that 17-20 inch range. We caught a bunch of 12-14 inch which is good to see.
I've been going up to the areas mentioned for 20 plus years now and ended up buying a cabin in the Bovey area. Looking to hear and share some fishing reports about the surrounding lakes. Never keep much besides some pesty northerns and panfish (which are plentiful) for the occasional lunch. So, I highly respect the area, but if you know the area at all, you will never be able to fish all its lakes in a lifetime... so some well informed fishing reports is always welcome. Again, I emphasize "smaller lakes," because the bigger ones (Jessie, Round, Wabana, etc) all have fishing reports available. Post if you're interested and lets get a good conversation going.
I would agree with the above answers, that the line of rivets are creating dirty water for you. I would move to the left as well.
Also, I would guess you may need to lower the transducer some as well. Get the transducer as low as you can without it making a large roostertail at speed. If you have a good square or quality straight edge at home, place vertically along bottom of the hull, extending out from the stern. The top of the straight edge should cover at least the bottom 2/3s of the transducer on the inside (motor side), maybe more if the pitch of the hull is greater. Transducer should also have a slight downwards angle from transom.
2 more things, make sure the transducer is level(left to right) with a small level. Compare the level of the boat to the level of the transducer. Boats don't always sit level on a trailer obviously.
One thing to remember with side imaging is you beam going out towards the motor is often interfered with the outboard itself. As you trim up the motor, that side will become clearer.
Well I don't have any inside info on a hot bite but have heard it's still a jig and minnow bite on the edge of flats in 7-12 of water. If the wind is pounding into a flat I would recommend heading shallow and trolling cranks. This would be a good option to at least find a spot to slow down and jig the edge once you've cover water and find fish. I've done well on these flats all summer long if the wind is blowing into them.
I forgot about the speed issues with these transducers. I also have a high speed dual frequency transducer mounted. I run it as my primary and do a split screen when I want to see the side imaging. Generally the side imaging works best under 6 mph with 2-3 mph being optimal.