I'm shingling a shed roof, and I've gotten to the peak on each side, scoring three inches off the top shingle, as it would have rolled over the top otherwise. Even at that, a 12" tab for the peak won't cover the nails of the top shingle on each side (it seems like it would need to be 14 inches wide or so). How would I handle this situation? It seems like I need another row of shingles on each side, but to make another row fit, I would have to score it in half probably (I'm guessing), and then I'm not sure where I'd nail it (maybe just as close to the peak as possible?). This is probably a very basic question, but not one website or book I have has addressed the details of getting to the peak (so I feel like I'm missing something very obvious!). Thanks for any help!
Ryan

 

Lessen the reveal on the last couple of rows to make room for the extra row.

 

Just like you said. Install another row. Nail it off about an inch or two down from the ridge and then trim it even and cap.