After finalizing the method I would use to attach the rafters to the second floor joists, I calculated the required length using the trig calculater a few posts previous. Rudi and I carefully climbed up to the second floor, where he helped me install the first pair, more as a test to see if it could be done readily, and if the attachment seamed suitably designed. Bear in mind for weight, simplicity and style considerations, a fascia board and standard rafters with associated birdsmouth cuts was not in consideration.
The second picture shows the means of attachment I designed, using a basic hurricane bracket bent to the appropriate rafter angle, screwed down, and then the rafter glued with PL Premium adhesive, screwed from the sides, and also screwed vertically from the bottom through the joist into the rafter. Theres nothing moving here!