I prefer doubles because, like Topher, I feel they ride better -- and I need all the presentation help I can get.
I hooked myself once, on the Renous, in the ear with a barbed, number 10 single. The guide removed it painlessly. Fishing the Penobscot one windy day, I hit myself in the back of the head with a 2/0 double, saw stars and almost keeled over into the water.
I usually debarb my hooks. Frankly, I like the take and a couple of jumps. I really wouldn't be upset if I didn't land the fish thereafter. I also don't like landing fish in nets or by pulling them up on the gravel. Tailing takes too much time, so a long-line release is just fine with me.
As you may have guessed, I don't eat salmon or any finny fish for that matter. Its not a matter of ethics. I don't like the way they taste or, worse yet, smell.
Best to all,