Go with an open mind, Record all your gun setup positions, Try everything in front of them so they can visually see it. stay away from descriptions by word of mouth.
There is only one true instructor there, forget all the trash talking about this guy said this etc. etc. it just wastes time.
get them on the coarse for as much time as possible. A brief description of what your having trouble with or what your working on at the firing line works best. Show it if possible.
All three instructors I worked with had different technics for target acquirement. and all of them work well with their method of shooting
If you don't like the alfa male personality be cautious and do your home work, Myway is a proven way and I am the example should carry a lot of weight in your decision. if you are afraid to make a change and try my way why did you come to my class
Decide before you go, am I working on something or am I looking for an overhaul
Put all your data into place and record it for reference. and I mean as much as you can. shell type, speed, choke, how I stand , where I look etc,. what I am saying is when you get there have your info together. you will get more out of the class if you are well prepared
I have a friend who went to a 2 day clinic, all he talked about was what a prick the instructor was and how much he was stuck on him self
My buddy Jim shot the next 3 best scores of his life 25, 25, 25,and then a 22 he stated after the event he knew going into the last round he was shooting over his head. in my opinion he missed the part of the class about self confidence. OR DID HE