I normally solo dive, that being said if I am on a charter boat and there is an inexperienced diver with no buddy I will buddy up with them because I actually like helping new divers and showing them things that they may not have seen on their own. I will also keep an eye on any divers in the group that look like they are having issues so that I can assist if needed, I have had to assist several divers over the years. It makes me feel good when I help a diver and they have a good experience instead of a bad or possibly dangerous experience while diving. When I dive with an inexperienced buddy I will monitor their location based on how comfortable they appear and after a few checks, I can get a good idea of their breathing rate so I have a good idea of how long their tank will last. If I am diving with an experienced buddy I don't worry so much. I am currently dealing with a medical problem that prevents me from diving for a couple of months but after that, if anyone needs a buddy on Wednesdays and Thursdays in the West Palm Beach or Jupiter area I am usually available.