Roll cast question
I'm a relative newcomer to this fine sport and have a roll cast question for you experienced casters.
I can typically manage a decent roll cast on still waters; however, I was out on a river (first time with the fly rod) and came across a tight quarters situation that I thought called for a roll cast but was at a complete loss on how to accomplish this on moving water. All the online instructionals I found demonstrate the roll cast on still water.
Can a roll cast be used/performed effectively on moving water; particularly across the current? If so, can anyone shed some light on how to achieve or maybe direct me to some literature?
Thank you for looking and by the way, great forum group you all have here.