To me drag settings are different for different types of fishing.
If it is at the lakes, i give the fish plenty of line to run, besides powering fish with soft mouths with small hooks spells disaster.
In the river i invaribly load my reels with 40lb mono, and depending on how much room there is in the channel, or how far i can afford to let the fish run before it hits the rapids i set the drag accordingly.
Once he enters the rapids, you have no choice but to slacken off on the drag, and only put the minimum possible pressure on the fish or he will break you on the sharp rocks.
There are no 2 similar settings that will work on a fast flowing river, each location needs careful thought. The only time i use a stereo type setting is when the rod is on a stand and the reel on bait runner(multiplier), but even then you need to have your drag correctly set so that when you switch from bait runner to drag, there is no huge jerk that can break something of pull the hook free.
After 15 breaks on 40lb mono, i am still searching for the perfect drag setting.