What to look at
Here the demo cast is shown on fast current water. Look at the anchor place which is set, at first, closer than usual. The line is swept upstream to be sure that my anchor will be at the right place when I’ll start my forward cast. As soon as I set the line in the water the current will bring it away. Usually with upstream cast, like the C Cast, the problem is less severe as the anchor it pull but in this case it is pushed away faster and longer.
On the second shot, from downstream, and better encore on the back view, it is clear that the gesture is asymmetrically done. The C is drawn downstream then the hand go upstream in a perfectly horizontal line to align the line and let it fly down to the water. You don’t draw a C and stop. The C is there to airborne the line, then you must prepare your cast.
The video demonstrates then the difference between the direct and reverse cast. Both are the same move but mirrored. Remember the use of these two casts is to always have the line downwind. If the wind blow downstream, your anchor will be downstream and (for right-handed) it will be reverse C cast, if the wind blows upstream, it will be a C Cast. A better way of remembering that is to always do your first ever move in the same way than the wind. If the wind goes from right to left, you’ll draw a C. If the wind goes from left to right you’ll draw a counter C.
This cast seems easier than the C Cast but in fact the muscular gesture is not natural. Our hands are better at turning something clockwise. And the worst part is for the forward cast. In a normal cast, your wrist works from up to down like a hammer blow. But in reverse, the wrist works in torsion and you don’t, usually, have much muscles for this. That’s all the problem of reverse casts. It’s why some prefer to change hand. For most it’s not easy either for one or two hands rods. Give it a try perhaps it will work for you. Put even more attention at having the best dynamic D-Loop to help your forward cast.
By the way, remember to always stay with the ideal training length of line.