I fish primarily with spinners, and I found that it was alot easier to release fish with barbless trebles on my spinners. I moved up here from Oregon this year, and found it interesting that the rules call for single barbless hooks most of the time. I feel the larger size used in the singles will actually cause more damage to the fish than a treble that is barbless. especially in the spring, and summer when I catch alot of trout, and smolts.