Longtooth,
On a 1/12 pitch, there should not be shingles. The absolute minimim from most manufacturers specs are a 2 1/2/12 or a 3/12, and that is really pushing it.
Don't take offence about the Wizard of Oz sidebar comment. After several thousand replies, if I didn't interject some slight humor, or intended humor, into some of the responses, this would be quite dry and boring. A little bit of someones personality has to come through sometime.
When I deal with a significantly serious issue, I provide great detail and depth, with no horsing around, but this question is just, "Should I do my roof before or after the hurricane", so I hope I am allowed a little flexibility.
Plus, both tornadoes and hurricanes get rated by the Fujita scale, for sustained wind velocity, I believe? The rationale for that remark directly pertained to a fictional tornado and the wind damage it created.
Smile.
Ed