Well, my issue with "tours" are that they seem like trust-me cavern dives for people with no training. Never done one, so that may not be the case. My issue with Jim doing them is that he's already done that once before and said he was ready to move on, it's dissappointing that a bunch of anonymous posters here on SB have seemed to sway his original decision. So before he throws the baby out with the wastewater, I think he should get an opinion from someone who's actually seen him in the water.