I've timed for Evil Dogooder many times. I start him and then give a wide berth. It's usually pretty easy, even as fast as he is. He doesn't argue, complain, lobby, ect. Just smiles and wants to know raw time. Misses tend to be an occupational hazard for him. The boy just wants to go FAST!!!
My three things I like in a RO:
I'm left handed. So, if the stage allows me to go from right to left, I shouldn't have to tell you to be on my right hand side. The opposite is the same for righties.
When saying "standby" give a full second before you start the timer. I don't jump the timer. So, a good smooth cadence at the start, usually translates to a smooth stage.
And unless I have an issue, screw-up, etc., I don't even want to know you are there. At Gunsmoke a couple years ago. We had a lady posse marshall who also happened to time for me at the start of every stage. When the match was over, I told her the best compliment I can give is that I never noticed you were there during my stage runs.