When researching rescue techniques, it seems there are a number of different terms for the same thing. A great case is the Armstrong or 10 Boy Scout Method. Rescue books use the term "Reverse Ferry" instead of the ACA term "Reverse Pendulum", they are also the same thing. The reverse pendulum is a good way to use your boat to quickly get a line across a river. Basically, you start from and upstream position and ferry quickly in the usual manner. The current and probably rope dangling will pull you downstream on an angle but at least you don't have to fight your way upstream. The belay person on shore could move downstream with you as well thereby using a lot less line. If you have a larger boat like a raft or canoe, you can add a person to keep the line out of the water (very important to avoid getting tugged downstream). Kayakers are more at a disadvantage since they sit low and close to the waterline. If you have a rescue PFD, you could attach to your tether. If you lack a rescue vest, some other methods that provide a way to quickly ditch the line are bite with your teeth or make a fixed loop and carry on the downstream side of the boat. We used to use a downstream loop out of webbing for towing swamped kayaks in the old days. In these more challenged situations, consider using thinner line (1/4") to get across, tie and drag the big line afterwards. Swimming and wading can use these same techniques but are typically not as fast as a boat.