“Setting roof trusses 30’ in the air for a 2.5 story house isn’t for the weak or the faint-hearted.”
My dad and I figured it out. Together we simply used weights to counter balance the rafters.
I think the mother was very cunning and willing to spend the time to learn. Heck, my mom laid the bricks for their house. I was damned surprised by that, but she did a great job.
You/dad/mom are good examples of the possibilities.