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Genesis once bubbled...
I could not do the dives that I do today using only tables.
At least not the way they're taught by NAUI/SSI/PADI, etc. In fact, I am "off the charts" regularly on my tables (I do run them as backup) when I do my dives, and since nobody seems to be willing to publish the "radical" ways that people talk about computing on-the-fly NDLs and deco schedules, there's no reason to believe they are anything other than one person's view into what has (so far) worked for them.
jamiei once bubbled...
just one more comment and I'm finished...
You also dive regularly with an uncertified diver by your own admission... How much trouble is it for him to get certified? Probably not as much trouble as it is to secure fills and actually go diving other than on a friends boat. I guess you provide all his fills for him though... No matter how experienced a person is or isn't, they need to be certified to dive... If he does it, someone else will think its ok and then you end up having a lot of uncertified divers that shouldn't be diving. zero tolerance... everyone should have training... just something else that is wacked about you