I have a young family member who is quite a bruiser (active in body contact type sports) and is on the very heavy side. He's going to spend part of the summer with me learning to dive. We've determined that he needs a custom wet suit due to his height/weight ratio - he is 5'10" and weighs 260+lbs. We are trying to figure out the best BCD for him and have discovered that not all of them are large enough. Does anyone have any good advice about fitting the bigger diver? Thanks much!