I love charts. I have the big green flip book chart for the St. Clair River, LSC and The Detroit River, along with my laminated LSC chart. In the summer I look at them at least once a day. In the winter I pull them out once in a while. But I'm a map geek anyway. Something baout studying maps and charts is cool to me.
I wish I had the money to get chart books for all the great lakes and maybe the keys or the ICW.