It's kind of amusing, the people getting all worked up about Kathy getting too much advice, any of which might be plumb wrong for her particular situation. When I've worked with instructors on these kinds of issues, what they do is try this and see if it helps, and then try that, and if not, play with something else . . . They don't necessarily, even when they can SEE what's happening, have the perfect answer to begin with.
The priorities are pretty simple: You have to put the tanks where you can reach the valves -- you can change this a little with stretching, but it's still probably going to be the most restrictive parameter. You have to put them where you can get pretty close to balancing your gear fore and aft, because diving massively head or feet heavy isn't fun. After you have those two things figured out, you figure out how to cope with the rest of the issues. And if you can't look up very far, you tell your team they'd better stay where you can see them!
(Rearing up out of trim is an option in open water ascents, but it is not a useful one in a lot of cave situations. Although I have learned the "swim, swim, swim, rear up and look what's ahead of me, swim . . . technique for Al80s. The key is not to move your fins while you're out of trim )
The priorities are pretty simple: You have to put the tanks where you can reach the valves -- you can change this a little with stretching, but it's still probably going to be the most restrictive parameter. You have to put them where you can get pretty close to balancing your gear fore and aft, because diving massively head or feet heavy isn't fun. After you have those two things figured out, you figure out how to cope with the rest of the issues. And if you can't look up very far, you tell your team they'd better stay where you can see them!
(Rearing up out of trim is an option in open water ascents, but it is not a useful one in a lot of cave situations. Although I have learned the "swim, swim, swim, rear up and look what's ahead of me, swim . . . technique for Al80s. The key is not to move your fins while you're out of trim )