I have a perimeter overflow (infinity pool on all 4 sides) where the overflow goes into a small gutter that is only 5 in wide. The water in the gutter is only approximately 3 inches deep at the most. Unfortunately sand and debris collect in the gutter. Is anyone aware of any type of vacuum I can use? I know I can use a shop vac but then I am spending more time dumping water out then I actually do vacuuming. Any thoughts would be greatly appreciated. Thanks.