Thanks for trying slipstream.
Some sportsmen just think that using prohibited bait/lures, taking more than the limit, disobeying slots, etc....is no bigger of a deal than speeding on the interstate.
From my perspective, the park does a decent job enforcing the fishing rules & regulations. I have been asked for my license far more times in the park than anywhere else in the U.S. I wish it were possible for better enforcement to take place in the backcountry, but its rarely feasible with the amount of personnel on hand at any given time.