When fishing double-hander with intermediate sink Skagit head (custom cut), I often find myself roll casting twice just to bring the head (and fly) up to the surface before I could commence with the main cast. Because most of my fishing is done in still water, I don't have the benefit of the current to help buoy up the head.
I find double roll casting tiresome after a while and soon started experimenting with a different roll technique. I finally settled on this technique that I find very workable and named it the Wiggle Roll Cast because of the wiggle I throw into the loop prior to the actual roll cast.
This roll cast is not just limited to lifting intermediate head but is also useful in lifting fast sink tip. Neither do you need to limit yourself to one wiggle. If need to, you can even throw in a double or triple wiggle to help surface the fly. In this video, I am casting a floating set up and very respectable distance can be gained with this cast as it affords a deeper and more dynamic D-Loop compared to the standard static roll cast.
Updated 22Jan2015: Here is a better version of the video in slow motion. I am casting with a TFO BVK 3wt Switch rod with a 235 grain Ambush line.