It looks like very challenging conditions to work in. I have come off a roof or two in such conditions, and I do not like working on ladders and scaffold coated in ice. The tight space you had to work in made it even harder, but I don't need to tell you that. Good for the abs. It almost was like watching a gymnast working uneven parallel bars while you were wrestling those bricks into place. Maybe next time you could wear one of those spandex uniforms like the Olympians? Or better yet a speedo (if it's not so cold). 🤣
It is also very difficult to freehand an angle with a power tool, as I have found cutting beams and posts with a chainsaw - and that's in wood. I am sure it is much more difficult in brick. I am very dependent on my compound double bevel chopsaw. It makes it very easy to make accurate angle cuts. Unfortunately, as you know, it isn't a tool that can cut large beams and posts, nor those tremendous bricks you're working with. At least you didn't really try a chainsaw!
I, oddly for me, had to do a little masonry this last week, as steps I made needed solid footing beyond them, where the ground is frequently mud, so I used some custom (DIY) patio bricks of concrete to create solid ground on which to step off the stairs. Sadly, I didn't use anything I learned from watching you, except to keep things level. I don't know if that's real masonry, since there's no grout holding anything in place. Just mud (because no sand is available). Packed soil has been keeping the bricks in place before, so I expect it to keep doing so in a slightly different position than they were used in before, as the new deck displaced them.
I'm very looking forward to seeing the roof on!
Thanks!