I've just read arms are positive buoyant when i used to think they were negative, so extend them out front to get trimmed when my head try to go up (I was thinking i the gravity impact) so.... It seems I was doing the wrong thing? what about legs?
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
I would expect most peoples arms are buoyant, not sure. But in any event I wouldn't position my arms in weird ways to adjust trim, much better ways to do that. You have more important things to do with your arms like use your equipment and otherwise keep them someplace comfortable and out of the way.
Some people have floaty legs, some not. Exposure protection can make a difference. Fin choice is one way to help adjust for that.
The OP talked about extending their arms out front, and that is what I would define as weird. I'm picturing superman style (probably the opposite of what you are talking about doing.) Out there they're in the way of seeing things, easier to hit things, inconvenient to look at anything on your wrist, and far away from the inflator and everything else you might want to get at.One of the better skills we learned in fundies was adjusting trim by positioning our hands/feet.
Your hands will be positive if you're wearing gloves and depending on your fin choice your feet will be negative or neutral.
Adjusting the position of those in relation to your body will definitely have a pretty big impact on your trim...
What you define as weird positions I can't say, but it does make a pretty big difference on your trim.
I think arms extended is mostly important when you have a drysuit as it help balancing with floaty feet but I am not 100% sure.The OP talked about extending their arms out front, and that is what I would define as weird. I'm picturing superman style (probably the opposite of what you are talking about doing.) Out there they're in the way of seeing things, easier to hit things, inconvenient to look at anything on your wrist, and far away from the inflator and everything else you might want to get at.
Sure position of arms (or anything) can affect your trim, and more so for someone wearing significant exposure protection. Simple physics. But if someone has a problem with their head going up all the time I'd rather fix the basic issue by tweaking tank or weight position.