Last weekend was fishing a cinder worm hatch and had three clowns come out to a single person spot I was fishing in a back bay around 1am, full bright white lights I asked them to shut the lights off. They shut them off stopped in their tracks and tried fishing further back, left quickly. They were back a few nights later in the way back literally with the lights on the entire time watching their cast (fly rodders). Mind you this is a shallow, flat, calm back bay spot, there is no peril besides some soft mud, this isn't a boulder field in heavy surf or a slippery jetty. If you need to fish with a light on the entire time fish during the day or fish a well lit pier. By the fratboy like vibe I got of the loud "group outing" my guess is younger Patagoniastaff style fly rodders with no clue what they are doing sent by one of the western sound shops.
*Please if you're going to send your clients out to fish explain to them the use of red lights only unless you absolutely need the white light for safety