I'm female, 5'11", 160lbs, a rugby player, and I smoked fuego almost all day everyday for many years. I've been doing obscene ammounts of cardio b/c getting rid of fat is the only thing I know that will help at all. The test is 1/17/2013 and I'll be pot-free for 27 days by then. I'm hoping to be peeing clean by the test but if not I want to do my best to dilute.
3 days before your scheduled U/A, take a home THC test to see where you stand. When testing yourself, be sure to use the first urination of the day when THCA concentrations would be at their highest. If you test negative with the first urination of the day, youre good to go.

If you test positive, then stop all fat-burning activities and be as dormant as possible until after the scheduled U/A. Anytime you burn fat cells, the THC metabolites are released back into the bloodstream, filtered by the kidneys, and end up in the bladder. By being dormant for those 3 days, you wont be releasing a bunch of THC metabolites into the bloodstream, which would end up in the urine to be detected.

Begin your creatine-loading 3 days before the U/A to allow adequate time for the body to convert creatine into creatinine. Creatinine (along with Specific Gravity) in the urine is what is being tested for by the labs to determine an overly diluted urine sample. Urine samples with too low S/G and creatinine levels are ruled "diluted". So when doing dilution techniques, dont forget to address the S/G.

Validity test kits (which contain panels for creatinine and S/G) should be used to check your efforts when doing any dilution techniques. These kits are inexpensive and are found online by doing a Google search for "drug adulteration test kits".