Based on this pattern, I’m making a hat, but not with duplicate stitch.  Oh, no, I’ve got to do it the easy/hard way.  Easier because it’s faster stranding everything than duplicate st (which is basically sewing).  Harder because you don’t typically make stranding in reverse stockinette stitch or all purls.  And I’m hemming the brim into place because it’s easier and hides the stray floats on the wrong side.

Did I mention this is in blue and sparkly white yarn?