The biggest issues with Smurfing
Is the ranked Matchmaking system. It makes absolutely no sense. Two games today in Plat MMR we had a Silver player in our game. One of them of had a total of 7 ranked games under his belt. He ended up going 0-10 mid lane, and was CLEARLY under no circumstances should he have been put that high in RANKED play. Second time, same thing, another Silver player in PLATINUM. I don't care if i'm playing wtih a Duo. That is broken as hell. I didn't duo, why am I placed with someone who's 25 Divisions lower, I can't even say it was a GG because he's usually 0-5 before the 8min mark.
Fix your Matchmaking and you'll see less smurfs. Period.