Of course... and we see the same pattern in the groups that come down for their OW checkouts, too. But there are enough from close by that hamburger it up that a regional correlation isn't worth pursuing. There are a few good shops out there - we claim to be one, and our divers are always coming up to me and asking "who are those guys kicking up the bottom?" (someone mentioned the six-month wonders... our youngest instructor is 32 with 1000+ dives, our average instructor is 50 with 30 years diving experience) "My" folks may not be perfect, but they're horrified and embarrassed whenever they do kick up a cloud.Jarhead once bubbled...
Rick, have you noticed a geographic pattern of the complaints of silting?
Rick