xyrandomyx
Contributor
As a few people have pointed out, what you consider 'low vis' depends on what you're used to and what you can expect in your area. I don't dive in vis less than about 2 metres/ 6 feet. Why not? I like to get at least one dive in on most weekends (say, three out of every four weekends). The vis here is seldom that poor, so, when it is, I'd rather just leave diving until the next weekend. I do fairly regularly dive in vis between 2 and 3 metres/ 6 and 10 feet. Why? That's often what the vis is like here and, as I said, I like to get at least one dive in on most weekends. I'm sure that if the vis here was typically 30m+/ 100 feet+ and seldom dropped beneath 20m/ 60 feet, I wouldn't bother diving when the vis was less than 20m/ 60 feet.