This time of year you can anchor up and let herring chunks out behind your boat on floats a good distance but something still manageable. Let them drift behind the boat. Every once in awhile toss a couple of chunks behind the boat and let them float back. It will be like rining the dinner bell. Once the floats go out to the distance you are comfortable with start working them back towards the boat, very slowy, alternate rods if you are using two. You dont really want them both at the boat at once always want one out behind the boat.
If you keep one real far back and one mid way you will get a good idea of where they are hitting. When they show up you can work swimming plugs in your chum slick
or keep going with the herring
Hope this helps or makes sense. If it doesnt make sense pm me and I'll try to explain in a differnt way. Its late and I'm sleepy.
Tight lines!