georule, They won't even notice. You need to sit down and put pen to paper as regards your displeasure.
It terms of impact I believe it runs
Handwritten shows that you are willing to take the time and expense to mail.
Word Processed shows less time but still willing to spend to mail it.
Phone call: Not totally sure if this should be higher or not.
Oh, those things are fine too. . .tho, frankly, they're only "yapping". Put your money where your mouth is, and they will notice. I think you're wrong that they won't be watching all the available financial metrics --including NHL CI cancellations-- quite closely. I do certainly intend to write Bettman as well when/if the league announces the lockout, telling him what I did (which will give more credibility to what I say I will do, about not re-upping if regular season games are cancelled) if the lockout goes into effect.