Ever wondered how your rig looks underwater? How much does your bait spread out when spodding?Does your marker float scare the fish. Rob Hughes delves below the surface to help answer lots of common questions like these in a new series - Understanding Underwater. In this first episode, Rob pays a visit to RK Leisure's renowned Wraysbury to show you his findings, looking at his pop-up rig, spod mix, different marker floats and how his mainline looks like while fishing what is a very weedy South Lake.