I can't reasonably make merits in any crime sweep. There's always a swarm of ships, and always at least 3-6 at any given time chasing after you while only ( at best ) 1 ship helping you shoot down your target. I usually get about 5-10 minutes in a sweep before I have to leave because my SCBs are empty. It was a lot easier to "hang out" in a combat zone pre 1.3 ..and even crime sweeps before following patches/hotfixes after 1.3 released. ( And that was with the 1 merit per ship ).
Vastly more efficient to just go Undermining in an enemy territory and interdict ships for 30 merits a piece. Even with the issues with interdictions and hyperspace after 1.4 released...it's still quicker.
Edit: You chould however...get in a full wing, then it would be a lot easier to handle conflict zones, and more efficient. Same can be said for interdictions though.