There seems to be a huge range of O2 consumption rates in polls on Rebreather World. What tricks have you found most efficient in reducing your oxygen consumption? Since my switch to CCR I have been forced back into the shallows with divers who have short-duration sawtooth profiles. I tend to be away for weekend trips without opportunities for oxygen fills, so it's a pressing problem - but it's also a strong stimulus to hone those skills.

Cheers,
Nicholas