Canadian Superior shore camping

As mentioned in the Canada 150th thread I plan on backpack camping in Pukaskwa National Park. Rather than hike back to the car and drive ~11 hours we may stop somewhere on the way back and camp. Right now the plan is to take the Thunder Bay -> Marathon route (getting there via SS Marie is significantly longer) . Any suggestions of where to stop along the way? Sleeping Giant? Nipigon marina?

Thanks,
Brian

My post weekend bump

Brian