I am not an instructor and have just 33 TG, therefore only the opinion of a beginner to an attempt to use underwater, not a thorough check. My instructor told me of such Reels anyway from already. In a set with a Mares buoy but I got the Reel favorable. After the first buoy set to 6 m, however, comes quickly to disillusionment: It is my opinion (is buoy) impossible under leicher voltage rewind the reel. But the handle is too shaky and the turning handle for an ordinary lever too small! Crap!
Fortunately, makes the mounting (reversible) decrease. Now it's just a Finterspool. Then you take another 10m leash off, 20m range also, then the Double Ender finally fits through a hole on the spool to make fixed. Hence 3 stars.
