Installing two IronRidge rails on the roof of the house, to mount 1.2 kw of solar panels on. Got four flashfeet installed today, before my drill conked out.. recharging the drill on my old solar system.

The potentially hard part of that, besides sweating on a super hot roof, is hitting the beams when drilling into the roof, otherwise you get the fun of an extra hole in the roof to deal with. Luckily, I was able to remove vent caps, so see the beams, and hit them on the first try every time.