Dilution techniques (regardless of configuration) are not a 100% sure thing. They can backfire if the THCA concentration in the bladder is too high. For most heavy smokers, it would be virtually impossible to dilute that concentration enough without sending the creatinine and S/G values into a downward spiral and sending up the red flags at the lab.
This is really serious, my whole career kind of depends on this and I am in desperate need of advice.
The problem is, my test will be supervised without any sorts of privacy. To put it into simple english. The guy/girl will watch my dick while I pee.

For employment-related situations, observed collections can only happen if the donor had been suspected of tampering. In any observed situations, the observer must be the same gender as the donor - no exceptions. This is clearly outlined in the regulations mandated by the DHHS in which all certified facilities must adhere to.