good mess nice job on the switch up. im not sure there is a pattern out deep. they seem to roam 8-12ft down in my waters. I just cruise around till I see suspended fish and drop on them. I do have areas of lakes that hold them more often than not though. I don't start out deep till july though most years.
just a hook unit on my boat. you don't need much of a finder though. most of my gill fishing takes place off my parents pontoon. being portable, a lot of times it was just a flasher. all I need to see are marks suspended to give it a try. like op showed they usually bigger fish. I troll them up(lil cranks or spinners) or cane pole n quill fish them. just depends on what I feel like that day. I also find 8-11 am to be my best time. it works all day though pretty good.
the camo bottom we painted on your boat should throw them off for a few weeks though.
you don't need much of a finder though... all I need to see are marks suspended to give it a try.I troll them up(lil cranks or spinners) or cane pole n quill fish them. just depends on what I feel like that day.