No first hand experience with them, but I have seen the Lyman Morse s/v New Morning (
link) install the "bendable" solar panels from SunWare (
link) that look promising. As I understand, this high-end boat is pure DC.
They're really not "rollable" per the OP's desired criterion, but if you crafted a rigid top on your dodger (as on the Valiants) I imagine you could permanently install these without the windage and w/o their being too obtrusive.