I used to carry a glove, something like one of these E.T. Unhooking gloves   (You need to Login or Register but after one lengthy trip to Quetico I just found it too big a pain in the butt and stopped using it.  First, they're hot to wear on summer's day, so I found myself putting it on and taking it off.  The last thing I want to be thinking about when I've hooked a trophy fish is finding my glove and getting it on.  Second, they reduce my sensitivity and manual dexterity so I've resigned my unhooking glove to the bin of unused tripping gear.

I do, however, use a lipping tool.  The one I have is an exceptional piece of equipment called The Lipper.  They're not being manufactured anymore, some kind of patent dispute, but it is the same quality as the Boga but a much better design in my opinion.  The Lipper has a locking mechanism, which allows the lipping head to swivel freely when unlocked.  So when I catch a pike the first thing I do is lip it in the water with the lipping head locked.  I remove the treble with the fish in the water (after I've given it some time to settle.)  The only time I  bring it out of the water is if I plan to eat it, which means it would be under 6 or 7 pounds or if it is a trophy size and I want to measure and weigh it.  Then I will unlock the swivel mechanism so that if the fish should surprise me with a final thrash, it won't dislocate my shoulder or break its jaw.  It's too bad The Lipper tool isn't available anymore.  It has been a god send for dealing with Pike and walleye.  If you ever run across one grab it -   (You need to Login or Register
As with most tools, quality tells.  Cheap lipping tools are, in my opinion, worse than useless.