The annual and event permits we get all override the culling rule. The only catch is all tournament anglers "must" have in there possession a tournament pass that has the following info

host name:
sponsor name and signature (tournament director)
location and time of weigh in
lake
date
permit#

as long as everyone has this card/pass DFG cant touch you. This is written in the annual/event permit for black bass tournament bi-laws. All BNT events had this card.