plus you will catch more fish using single hooks.
This might sound to the uninitiated like pro-carp propaganda, but it is TRUE!
I learned this the hard way when starting out. I was losing a lot of fish to hook pulls (like about 25%) using trebles with dough bait and couldn't figure out why.
I decided to give single hooks a try after reading about their benefits online and that number of hook pulls went down drastically and I never went back.
I think that trebles, in addition to being dangerous to small-mouthed fish, are just too "busy" in that they don't give good enough range of motion when initially hooking the fish, especially carp where the initial hook penetration is very important due to their soft fleshy mouths.