I think my friend that a change in distance will affect the decision regarding the type of arrows an athlete may buy. If 50 meters a good idea might be to acquire the Easton pro field (although i saw athletes shooting carbon arrows with wider diameter in the recent European Grand prix in Cyprus) or the standard pro tours for 70 meters
Heehee yes, I can imagine!
I once had trouble with the Tax man and had a big repayment to make. I felt it wasn't my fault and wrote to them about it.
They wrote back to inform me that the problem was with me and could not be considered to be "their Eerror".
I felt it was their (Eeror) and felt their checking wasn't that good.