[glennv]

Trux , I think we are talking past each other. Probably my own fault because I discuss 2 thiungs at the same time (measuring problem and the value of record attempts). You talk about conditions making it easier for the athlete. I talk about conditions making the measurement less accurate then 1 meter. Different issue. I agree on your point that if it makes it easier, in the current rulings etc , go ahead and do the same. But (lets take the recent dive as an example) can you really without any doubt say that one dove 1 meter deeper/shallower then the other ? Neither could you with 5 m or any number for that matter , but what you CAN say if you take a margin that is above the current error margin that the person dove deeper then the previous record holder for sure.
So for the last time I was just suggesting to take any interval as long as it is not within the current error margin of the measuring system used. Otherwise we could have situations where the new WR is given to someone that actually dove shallower then the previous one. I think even you would not advocate a system like that. Show me beyond a doubt that you can measure depth reliably in a changing environment , salinity , temperature gradients etc etc with current devices to within 1 meter and I am you man ;-)
For static and dynamic we have (percentage wise) much smaller error margins so thats why the current systems works fine and you will never see any discussions about who dove 1 meter further than the other.