When you are laying out line in a cavern or cave, you want to focus on the enjoying it - not worrying about your line snapping. Our reels are easy to use and solidly constructed - they're what you want with you 100 feet down and 30 feet in. Wreck divers in tight environments count on lines to guide them out in the event of a silt out. A good line could save your life, so be prepared with the best. Plus, if you have an Surface Marker (which you should) you should have a reel so you can deploy it from below to allow boats to know you are coming up. Stay safe and have both.