I use the side mirrors until I get lined up next to the dock or pier at the ramp.
Then I turn around either stick my head out the window back wards or open the door to look back.

Here in Michigan forklifts like Joey's are common at nearly every marina.
They usually offer in and out service where your boat gets rack stored in a barn, storage building, or an outdoor rack until you call and tell them to drop it in a slip.
Roll in a few minutes later and float away.
Usually cheaper than renting or leasing a slip for the season AND your boat's bottom does not get covered in algae or discolored.