I am replacing a bad section of roof over my deck next to my fish pond. I took off the shingles and removed the old plywood. Then I cut out and a new piece and painted it before I put it up. Now I am waiting for the paint to dry. I chose to come in and Freep rather than watch the paint dry. I have at least some of my priorites right.
Some days, watching paint dry is a good thing. You could always alternate with watching grass grow.
Good luck on your roofing job.