Originally Posted by
Rhino
For a first dive with a new buddy, I choose somewhere that I am comfortable diving with an unknown quantity. When I was a newer cave diver, that always meant a cave that I had dived previously. These days, I might be comfortable diving in a cave I had never been, with a new buddy where the buddy was comfortable. In any case, the first dive will be relatively big cave, including a possible jump or jumps in not-too-small sized tunnels.
If the new buddy is a relative newbie, I will respectfully explain that because it's our first dive together and I have a little more experience, I would prefer my new buddy to lead on the way in so that I can watch her. I may also mention that I'll probably want her to lead for the first part of the way out, but that I also think she should get a chance to see me from behind to note any issues and decide whether she wants to dive with me again. Even if I don't mention it, at the turn I'll usually motion for the buddy to "go ahead." Assuming all is well on the way back, at some point I'll signal to "let me go first."
If the new buddy is more experienced than I am, I will respectfully ask the buddy whether he would mind leading on the way in for a bit so that I can check him out, like running the primary and the first few hundred feet - which usually means that she will be swimming faster than my normal pace, and then I'll then take over the lead.
In the initial dive stages, I find discussions of signaling and gas planning very enlightening. Also, I listen carefully to dive experience stories. Personally, even if I know and respect the new buddy's instructor, I invest no more than a little trust in that familiarity.
After the initial dive or dives, I try to work in progressively more "challenging" areas and dive plans. That goes for both buddies with more and less experience than me.