Beneath Superior's Surface
To complete the trio, here is another shot from Gros Cap. This time I moved in close and low to the water's edge, while using the the circular polarizing filter to reveal Superior's rocks below the water surface. This one is definitely better when viewed large.
For this shot, I used a 4x6 Singh-Ray .9 RGND filter to balance out the exposure; a Kenko Pro1 Digital Circular Polarizing filter to kill the surface glare; and a Kenko pro1 Digital 3-stop ND filter to extend the shutter to smooth out the water.