I do not shoot a PCC, but have observed a lot of PCC shooters ranging from unclassified to GM (USPSA). Observations:
#1- If you are serious, get a JP or SIG MPX. These guns run well and are a good indicator of someone who is not going to be a problem for the whole squad. Put one RDS at the 12 o clock and another offset so that you can shoot weak hand around barriers easier.
If no, continue reading.
#2- Show up with the most problem-prone franken-build possible. Use components from a variety of manufacturers to ensure nothing will function consistently. Be sure to bring poor quality reloaded ammunition. Have a squib, don't bring a rod- someone else will surely have one. Insist that "this never happens" when the PCC malfunctions at least twice per stage. It's OK, you can blame your poor performance on this.
#2.1- Get the longest possible aftermarket extension. 50% you'll never have to reload, 50% you'll have a meltdown reinforcing #2. Good odds.
#3- Be sure to turn your sight off after each stage and back on again when the shooter for the next stage. Your Aimpoint may have a 50,000 hour battery life, but you'd better conserve the 30 minutes until you shoot again. Take as long as possible cycling the brightness up to where you want. Go ahead, the 6 other shooters in the squad will wait. You've already taken the time to pull your carbine out of the case, remove the chamber flag, and either find somewhere to tuck it on your person or handed if off to the RSO.
#4- If you do place well, be sure to talk trash to the pistol shooters you placed above overall. They might have been production or single stack division, but they should know you beat them.
After all, what were they thinking, bringing pistols to a pistol match.