Fly Fishing Lesson - How to Snake Roll Cast 

When using a shooting head you should pull the running line back in until you have between 1’ and 2’ of running line outside the tip of the rod. Do this before you begin the cast and begin with the rod tip at the water before starting the cast.

@@LoopTackle83 That's not what I asked but thanks anyway

I think it also depends which bank you're on. The river here if flowing right to left. So casting is on downstream side. I hope that makes sense?