This being Minnesota, a LOT of places have a parking pad along the side of the house or driveway for a boat. I have seen several where the parking is at a right angle to the drive.
For some of the places we have looked at, the space is big enough to park a 5th. The problem would be in maneuvering both the 5th and the TV around to get into the spot. Several of my current neighbors have smaller dollies for their boats to address the issue. So something like the links provided (thank you!) might just fit the bill.
While expensive, it would be cheaper than buying more acreage with suitable access.
So in future shopping that opens up options....now I just have to find a place that accommodates both the 5th AND the boat!