I was out of Hammond Harbor on Sunday the 5th and picked up 14 13 inchers inside and then headed towards Jerose Park and found them schooled up in about 37 ft of water. I was fishing medium and baby roaches, soft shells did nothing. I hit all fish bottom bouncing, surprisingly most of the perch came on the medium roaches....bigger the bait bigger the catch is my motto. Ended up with 25 perch between 3 of us. I agree though it did seem like slim picking and had to work to find them. Started marking big blobs on the Lowrance and sure enough they were there. I'm not really sure what their summer patterns are but when in doubt go deep.