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Guest
I used to depend on identifying a unique formation at the lip of the dropoff, either sponge or coral. That was not always reliable. On my last trip, another diver gave me a 15' length of 2" wide yellow plastic caution tape. Add a 5' length of cave line to one end and a float (fishing cork) to the other and you are in business. Much easier to recognize than most natural formations and no more of an environmental problem than the issued lionfish markers.
Sure you can always surface to spot your exit target. Watch out for the kite boarders!!!! I don't like to surface until the water is too shallow for such traffic.
Sure you can always surface to spot your exit target. Watch out for the kite boarders!!!! I don't like to surface until the water is too shallow for such traffic.