I am going to be shooting a wedding reception this weekend for a friend. I just got an SB-600 for my Nikon and the CPII circular polarization filter. I am wondering if it would be in my best interest to use the CPII with the flash? Some wedding dresses can be quite reflecting. Would the filter eliminate this reflection? Would the darkness that the filter adds screw up the rest of the shooting? If used with the flash how much compensation should I used to make up for the light lost when going through the filter? Thanks in advance for all your help.