I agree and disagree with 2 points.

First, I've caught some nice fish in Sekiu and Sooke with the tide running pretty strong using a flasher and I can tell you that if the fish and you are playing tug-o-war sideways to the current, the flasher is taking a lot of sideways force from the current and it can vibrate pretty hard. So on this point I disagree. I can't see that this could happen with the quick release kind, seems like a flasher flapping in the current would have less drag than a flasher held sideways to the current. Minor issue really though. I've nailed a lot of fish both big and small with flashers and I don't think that the flasher drag is a real problem.

Second, I agree with Downriggin'. Big fish will tend to make flasher drag seem pretty insignificant. When I'm "feeling" a fish while using a flasher, if it's a big one especially, I'm feeling head shakes and can tell when they are rolling, etc. The flasher drag isn't really that big of a deal.

P.S. Nothing feels better than a coyote spoon or herring trolled solo using a medium/light outfit with a 20+ pounder on the other end though!!!!