I don't know how you all dive from your boats. Or, for that matter, how you boat. If you plan on routinely leaving the boat in the water, unattended overnight, I think a cuddy is the way to go. Otherwise, you'll have to carry all your dive equipment, less you tanks, up the ramp to your car/truck to wherever you are staying and then back down and out to the boat the next morning. Granted, it is not difficult to break into a cuddy. But, few are going to try, and someone is likely to notice, whereas simply snatching a BCD, Mask or computer would be realitavely each to do when it's just sitting out in the open. Manuvering around a cuddy is usually not as easy, but do you need to do that? When I'm patrolling, and coming along side someone, it is nice, but when I'm boating/waterskiing, I have no reason to. The only time is docking. And, the cuddy is a place you can keep things either out of the sun (coolers, snacks, towells) and out of the rain.