We all make mistakes. What makes a good dive buddy is whetehr or not we learn from those mistakes. I would almost guarantee that guy will assure he is more appropriately weighted in the future. And he will surface swim with his mask around his neck. While most of us try to learn the "easy way" and listen to our instructors, a lot of times simple lessons must be learned "the hard way", and those lessons are rarely forgotten.
Only you can tell if he is worth diving with again. It's not so much the mistakes which were made, but rather, his attitude towards the mistakes, and attitude in general. I can overlook mistakes as long as my buddy is willing to learn, and doesn't have a blasé attitude towards the risks involved in diving. As long as my buddy isn't trying to push his or my skills beyond a level appropriate for our training, and actively desires to improve, I'd dive with him.
But then again, with only 6 dives, I'm most likely the most inexperienced of the pair, and need to demonstrate the positive buddy traits I just described.
EDIT: There's actually another lesson to be learned from the sinking buddy experience, aside from making sure you're appropriately weighted. Have fins on before getting off a platform. Having fins or not can easily be the difference between being able to swim an overweighted rig up, or having to get rescued by your buddy/ditch weights/ditch your rig/walk back to shore underwater.
Only you can tell if he is worth diving with again. It's not so much the mistakes which were made, but rather, his attitude towards the mistakes, and attitude in general. I can overlook mistakes as long as my buddy is willing to learn, and doesn't have a blasé attitude towards the risks involved in diving. As long as my buddy isn't trying to push his or my skills beyond a level appropriate for our training, and actively desires to improve, I'd dive with him.
But then again, with only 6 dives, I'm most likely the most inexperienced of the pair, and need to demonstrate the positive buddy traits I just described.
EDIT: There's actually another lesson to be learned from the sinking buddy experience, aside from making sure you're appropriately weighted. Have fins on before getting off a platform. Having fins or not can easily be the difference between being able to swim an overweighted rig up, or having to get rescued by your buddy/ditch weights/ditch your rig/walk back to shore underwater.