In my experience, when fishing shallow grass flats, I try to vary retrieves as with most retrieve baits, but I find more importantly when it comes to equipment setup, a 7' medium rod with a light tip allows you to pull through heavy heavy grass better and may give you an advantage for getting bites. It is a fun bite to get, they absolutely hammer it. Be sure to experiment with different baits due to the overall size differences from various manufacturers. Not all 1/2oz. lipless baits are equal. Also, try
I agree with keeping the rod low when you fight fish, as I usually rip to the side also, as opposed to vertically. You may find it keeps the fatigue down at the end of the day and when you are cranking fast in a schooling situation this works well because you already have the rod low and in position to set the hook.