Sick of hearing: "Pleasantville traffic, Cessna 12345 on LEFT final for 35, Pleasantville"
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I don't have a problem with this at all. I don't do it but I see nothing wrong with this as it just tells people what pattern you are flying. I like to make my calls as I am doing the turn so if you say "turning left final" that will give people more of an idea where you are and where you are coming from. Not to mention it differentiates you from those morons who fly a non standard pattern, doing right traffic when left is standard at the particular airport, or those idiots who just do straight in finals, and enter on base legs.
It is just one word and isn't hurting anyone. If anything it is even more safe. No different than saying "left upwind".
What I do have a problem with is people who think their way is the only correct way of doing something. As a CFI I see many things, some good, some bad, and some just different.