IS Using a template Waitlist Update Bad?

I have concentrated on where I have gotten offers and scholarships however I am interested in widening my options and so would like to get of the waitlist for at least one. Two of the schools almost always take students off the waiting list (i’m talking about anywhere from 50-200 and a decade rarity of 0) whereas my first pick is unpredictable in its waitlist patterns. So I know the reality but I just wanted to know how to go about the update letter.