I guess I'm too cheap to risk breaking a good rod. So i net them, lip them or grab the line to lift them. I never swing them into the boat just using the rod.

^^ What he said ^^

We jackpole 40# tuna all the time with heavy gear of course as for bass if its my flipping rod then 6lb is my airborne limit if I'm drop shotting then I'm down on the deck for a lip grip its all about committing to the first grab

At the end of the day it all boils down to how badly you want to protect your equipment. Now tournament guys that are playing for the big bucks I say swing away and due whatever it takes to get the fish in the boat and cash in for the tournament. For the folks that are fishing for fun "with high end rods" I would question the need to flip a fish of any size. Why chance rod breakage of putting added strain on a rod only to have to file a warranty claim or replace the rod out of pocket if it isn't under warranty. I would never think of boat flipping anything with my Megabass, Loomis, Champ Extremes, or Cumulus rods. Do as you wish with your gear but I believe a good percentage of rod claims can be prevented by avoiding flipping fish.