My recent Real Time Review of Maldives Deep South trip may provide you some impression whether you are ready or not to dive in Maldives:
Carpe Vita Real Time Review: March 7-18, 2021 Trip to Maldives Deep South
At Nilandhoo Kandu (channel), hence, a channel diving, where we had to use reef hook, the current was so stiff and varied (pulling me side to side) causing my coil wire of the reef hook to over stretch, fatigue and broke. I got blown away. Luckily I went underneath DM, who was behind me, and he was able to grab on my BCD shoulder strap. I also was able to grab on a pocket on the rock underneath him. That was happening around 93 feet depth. After our NDL reached close to zero (26 minutes bottom time), he crawled up against the current to retrieve my reef hook and then we drifted to the shallow.
The lesson learnt on that dive is don’t get a coil-wire reef hook. Get yourself a rope (preferably rock climbing rope) that can stretch and take the force at least twice of your body weight.
Also you need to learn how to use the reef hook and when to hook it. Before jumping into the water you need to have the reef hook set up & tied on your BCD.
To tie on the reef hook onto your BCD, we typically loop the tail end of the rope around BCD left & right waist D-rings and clip the tail end clip back on to the rope. So when the force exerted on the rope, your body would be pulled evenly at the center of your body, i.e., you’ll be facing squarely against the current, not side way. We secure the reef hook end by tucking it in between the wetsuit & BCD belly strap or wherever it would be easier for you to grab & pull with one hand. I have another clip on my reef hook end so I can clip the reef hook to my chest D-ring.
How and when to hook in would also require some training. We typically start to descend in the blue water, away from the Kandu, where the current is mild. You would go deeper than the reef ledge. As you are approaching the ledge, you grab the reef hook end and hold it on your hand. I’m lefty, so I hold the reef hook with my left hand. My right hand would be busy anyway for holding my camera rig. As you are ascending and approaching the reef ledge, you can start noticing that the current starts to pick up. As you pass the ledge within an arm length away, you need to quickly find a rock crevice to hook on and hook it as soon as you can. Then you can let go the reef hook off your hand. Put a little bit of air into your BCD to put some tension on the rope if the current is mild. Don’t put too much air into your BCD where you might jeopardizing yourself of shooting up to the surface if the reef hook came undone. You won’t need much air in the BCD when the current is stiff.
If you miss the hook in, then there goes the Kandu diving. You’ll be blown away to the shallow and end up doing a drift dive. This is when you need to deploy your DSMB at depth so the boat can track you down before getting lost at sea. So, you will need to learn how to deploy DSMB at depth. The deeper you deploy it, the less air you need to blow into it and the quicker the boat to spot where you are.