Currents churn loose all kinds of minute marine life in the troughs along the beachfront. Passes, cuts and the channel side of jetties always produce well during the first hour or two after a high tide turns and begins to fall. Offshore bottom fishing can be miserably slow when there is a complete absence of currents. If moving water is a key ingredient in good fishing, then the faster it moves the better the fishing. Not necessarily so.
Fish normally swim into the current.
The moving water sweeps food matter to the fish and as moving water moves over the fish, it allows them to filter oxygen from the water with a minimum of effort. But when the current reaches a point where it becomes an effort to maintain headway into the current, fish turn and go with the current to areas where they can get relief. These are usually areas where obstructions deflect the currents. This is the reason the eddies caused by fast moving water at the ends of jetties can be productive of large game fish. If you're faced with a situation of fishing fast moving water, get there at the start of the movement.