I'm from Ohio and have a cottage in northern Michigan (Leota/Harrison area). Yep that's one of the better roads. Lotsa cool trails though (mostly sand) that we spend hours enjoying the Jeep, the people, and of course the scenery.
Does your sunshade by chance repel water ? I have been looking all over for a cover like that except to be somewhat waterproof. It doesn't need to be roadworthy. Just enough to get back to the cabin if a quick rainstorm pops up on the trail.