that's exactly what I would do, ask a local for advice and dive with someone that know what they are doing.

Seasnake that's exactly what I was trying to say. I don't want to be responsible for someone getting hurt or even dieing becasue they should be there. If they managed to get themselves in trouble I would do my best to help get them out, but I wouldn't put them in that situation. So that's why I won't physically help someone in the water, unless they are disabled, or something along those lines.