After having reached the first & last forms with full-length strips, I ran a 1/4 x1/4 pine strip the length of the keel, nailing it in with brads. I used a string line, stretched it straight, and generally ignored the center marks on the forms. It came out pretty fair, except for a lump around form #16.
I then ran the strips parallel to the center strip. This seemed ridiculously easy compared to the long strips near the sheer line. The lie much flatter, only a slight taper needed, and they naturally get shorter as I go along. I left the ends unfitted, since I want to try Vaclav's technique for "filling in large areas". More about that later.
My most-used tool for holding strips in place is plain old filament tape. It fits into small spaces, and you can really get a good squeeze with it, especially with multiple laps. I'm not an anti-staple purist, but I sometimes found that they don't really hold strips under a lot of tension.