Yes it works, but as Tellie said you need to watch the speed anything much above 4K to 5K and they will be damaged.
They clean reasonably if you drop them over the side at a windy anchorage. The stern sheering around provides enough water flow. It helps to store them in fresh water for an hour or so and then dry them , this will kill any marine
organisms that are then washed out by the water movement.
Finally I recommend the lovely clear water of the Med, there’s not much for the filters to do.