Well said SCUBAlady! I have a policy of not mentioning the name of the site and let the Divemaster decide. Hes going to look at the tide,currents ,visibility, experience level of the divers on the boat and also consider what they have seen before. So I don't complicate his life with telling him where to dive. Your right on about North , its a gas mileage issue with shops in town, It cost more to go farther North so consequently the less visited , more pristine sites are North.