Now that is some impressive scenery! Really looks like a great time, the kind of thing that I would love to do..
On another note, I call the U.S Coast Guard at the Apostle Islands, and they said that I should be OK in an 11' RIB with proper planing.
Also, based on my research, the transom is only rated for around 140lbs,
So maybe the 170lb E-tec would be to much for it i'd assume? I have a line on a cheap one is why I ask...