I did mine solo with a lot of blocks and towels. The center block was cut into a slight "V" with the towels to further protect it. I wanted to distribute the weight as much as possible.
It took some time but I was able to do it no problem. Keep in mind....I did it when everyone (kids, wife and dog) were away. I didn't want to risk someone bumping into it or climbing in.
That would have been a bummer.
It's nerve racking to see it on jack stands. I did it to re-finish my trailer so I was not touching the boat at all. Be sure to fully support it......especially if you are working underneath it.