I always thought spending a couple hundred dollars for a day's rental of a man lift would do the trick nicely. That, or build a basic crane with 2x4s. Lots of out of the box ideas. A basic ramp made with 2x4s works well too.
I was pretty happy with the scaffolding assisted approach I came up with. I considered renting a motor platform like that but then I would be on a clock to finish quickly enough to manage the rental fees.
Plus I can only get that on one part of the property and it’s a very awkward part to get panels onto