RE: AMA Pattern - Your Caller
Hello Vince,
I have flown in three contests so far and in each one I had a different caller. It has not been a problem and it has been helpful more than once. Although I have flown the sportsman sequence many times and know it by heart, under the pressure of a contest, your memory may not be at its best. The caller kept me from going "out of sequence" more than once. Also, if you get a more experienced pilot to call for you, they can also give you a few tips after the flight (and sometimes, during as well).
In terms of calling the maneuvers, I generally have the caller call them in pairs, so that I know what it is coming up next. It leads to a little bit of repetition, but it seems to work well. An alternative is also to have the next maneuver called as you are finishing up the current one.
Good luck,
Teo