I would still recommend the wingspan method though.
I forgot how to do that-it's been a while - please refresh my memory.
After listening to you guys, I'm sure that I over-thought this whole process now[:@]. After thinking about it (again), I realized that it doesn't matter what the BH is, because a person's DL has nothing to do with the BH of a particular bow - DL is always the same. BH determines how long the string is in contact with the arrow, so a bow with 8" BH will lose the arrow 2" sooner than a bow with a 6" BH. This has nothing to do with DL of an individual, who will have the same DL regardless of the bow used.
Thanks for the tips - I'll try a variety of methods and determine which one is most accurate.