I think we're sending the wrong message here to a lot of less experienced anglers. It is fine to tell everyone that we can set our drags by feel and that scales aren't the way to go if you're a real hairy chested GT angler
However my experience on trips with the average angler suggest that settings are all over the shop when done this way. Another problem is the lower margin for error in some anglers knots, an over the top setting may cause an unwarranted break off and don't even start on rod breakage issues etc.
Of course I'm not disparaging less experienced fishers here as everyone starts off as one.
So my advice would be to set everything, that way when something goes wrong, as it inevitably will, you're first thought won't be, what the hell was that drag setting