I took Dave Gentry's advice and took off the chine stringers and pre-bent them. This I did by suspending them by their ends from the garage ceiling with a bucket full of off-cuts hanging from their centre.

I left them like that for a few humid days and then reattached them after the gunwales, keel and stem pieces where pegged in place and held firm on the strongback.

When re-attaching the chines, I found the amount of rocker that was preserved could be adjusted by where on the stem pieces I landed the ends of the chines. The whole frame is pegged together now, I just need to fit the cockpit coaming and floorboards and I'm ready to skin.