I've got four lights. One from Green Glow Dock Lights, two from The Green Monster Fishing Light and one from Alumaglow lights. I'm going to get another pair from Green Glow because they have 7000, 14000 and 21,000 lumen lights. I'll get a pair of 14,000 lumen lights. The AlumaGlow is an LED light which is very bright and cheaper but because it is a cool light it is covered in time with algae. It's best to get a mercury vapor set which are hot underwater and aren't then covered by biologic stuff. Mine really work because I always have people fishing around my dock in the early morning and at night. The lights are expensive. A double set of 14,000s run about $650. A single light about $350. During the summer I've seen packs of bass roaming around the lights. Not so much now.