yea... i had one on mine but i only used it for surf and snorkel as long as when i was snorkeling i wasnt more than, coil touching the bottom deep, when everything was fully extended... the ALK batt compartments are very sturdy and waterproof you shouldnt have any problems.... just remember to use silicone grease on the O-ring every time you change the batts..... you can also get lower shafts that are 4 - 5 ft. long by themselves and use them for snorkel MDing in about 6 - 8 ft. or water... its a lot of fun and very relaxing..... i usually just carry a hand beach scoop for that and when i hit a target dive down a scoop it up