bum keep floating up

[cool79]

my wife is currently having a issue of her bum keep floating up. she is using intergraded weight system. her BCD is cressis travel light.

she is currently using 6 weights.

So I passed her my weight belt and she put 4 on her back and 2 in her BCD. it did improved by a bit.

Also she is using Xstream.

Not sure how to resolve this. She would like to use just the intergraded weights only.

 

[DivemasterDennis]

She can, but first needs to do a proper weight check using a tank with only 500 psi in it. I suspect she is getting more buoyant through the dive as the tank lightens while air is depleted. Most integrated weight systems will allow ample weight for proper neutral buoyancy.
DivemasterDennis

 

[mselenaous]

In addition to proper weight checks, a small 2 or 3 lb weight can be added to the bottom cam band to help distribute the weight more evenly. Also suggest moving the BCD further down the tank (aka tank valve closer to her head) to that the tank is more centered on her center of gravity.

Here are links to 10 articles you and your wife might find helpful.

 

[cool79]

when she decend, her legs can't be straight down too.

Not sure will the weight belt help a not.

Maybe I will ask her to move the tank more towards her head. Hopefully she will not get her head banging to the 1st stage.

---------- Post added September 4th, 2013 at 12:45 AM ----------

In addition to proper weight checks, a small 2 or 3 lb weight can be added to the bottom cam band to help distribute the weight more evenly. Also suggest moving the BCD further down the tank (aka tank valve closer to her head) to that the tank is more centered on her center of gravity.

Here are links to 10 articles you and your wife might find helpful.

I think I will bring her to a pool session to retrain back the skill.
need to get her to do a proper flutter kick 1st. if not it will be hard for her to fight against current if needed.

 

[SailNaked]

The first stage head banging can be a problem, I usually get more beer and go to another stage playing classic rock instead.



Think of a balance beam, floats on some parts weights on other parts, try to balance them or move them as close together as possible.

 

[Jim Lapenta]

It would also help to know what her overall body posture is. If she is not laid out flat she could be altering her center of gravity without realizing it. I see this often at training sites where people are bicycle kicking instead of a proper flutter kick. Or better a modified frog with the back slightly arched that brings the weight more towards the center and brings the posterior down. She can also try to keep her hands closer to her chest.

On a completely silly note, if her bum is floating up he needs more weight around his ankles. And maybe she should dive with you and not some bum.

 

[freewillie]

Pull her finger. Sudden release might help bottom sink.

On more serious note, try moving some weight from front to the back into the non-releasable pockets or use tank weight. Heavier fins or simply ankle weights.

 

[keyshunter]

First you need to assess her position in the water as Jim mentions above. Assuming that she goes through the water with her legs more or less in line with her spine, her legs should be floaty as well as her butt. If this is the case, move the tank DOWN in the BC (the opposite of what mselenaous says above) and do not put any weight above her waist. Use the integrated pockets, a weight belt or, if necessary, attach some of the weight to the bottom of her tank. DO not add weight to the upper trim pockets or to the valve. Take your time and make small adjustments where necessary.