well we all have that problem of hiding our pyro stuff,especially here in greece.As greeks,we don't have issues with cops spotting us with pyro inside the standbut during our entrance at the stadium(where we usually buy the tickets),cops search our bodies for flares etc...in fact they actually touch our bodies trying to spot flares and that's why they can't touch our genitals' region...PUT THE FLARES IN THAT REGION.effective way because if they touch you in that specific area,you can charge them for sexual abuse(oh yes)...In one of my club's games against our rivals,some guys had filled some bags with flares and dynamites,and and then the remaining space of the bag was filled with bottles of water...we passed 3/4 bags cause the 4th one was compromised...INEFFECTIVEtoo risky....Some other lads had hidden their flares inside their unfolded banners INEFFECIVE,tooSome AEK fans had filled a drum with flares and pyro stuff,they passed through cops and security ,and in the stand they "opened" the drum's skin and used the pyro succesfully(against atromitos fans,actually ,but they passed it through security check...so USE A DRUM

dont hide flares at your legs or at your sides,they will find it and you all know that....
dont hide it in you bags or inside the banners
use sandwich bread to hide your flares...  

  
 
 

I think best is not go trough security with Pyro, instead trow it from outisde the stadium, or somehow hide if the day before the match.

Also you can hide your Pyro somewhere in a secret hole in the stadium before the match,or not only before the match,if you can enter in the stadium.You can collect your pyro in this secret holes and not to rescue everytime you went to the stadium!!!