@Dody, What happens when the current increases unexpectedly and you find yourself swimming harder than expected? It's not hard to double your SAC rate. What happens if your buddy has an OOG emergency at depth near the end of the dive? What happens if the OOG emergency is compounded by working against a current? What happens if you find yourself in this situation and realize that while trying to help your buddy, you've gotten disoriented and now don't know where the anchor line is. So now you have to decide on trying to find the anchor line with a dwindling gas supply or make a free ascent, drifting away in the current from your anchored boat. What happens if you're sharing gas, looking for the anchor line, and then you have to stop and untangle your buddy's fin that got snagged in monofilament?
An inexperienced diver can quickly find themselves in over their head with compounding problems. If you haven't experienced it, you might be astounded at how quickly problems can compound. In those cases, extra gas is always your friend. On deeper dives, there is simply no good reason for not using a larger tank.
An inexperienced diver can quickly find themselves in over their head with compounding problems. If you haven't experienced it, you might be astounded at how quickly problems can compound. In those cases, extra gas is always your friend. On deeper dives, there is simply no good reason for not using a larger tank.