Ok how about this...
When I have a secondary whistle and the play is not in my primary - I almost always tell the other guy to take it (if he hasn't said "I got it" already). If it's in my primary, I'll say, "I got it" and then signal but I make sure he hasnt signaled first.
For me, the above approach does not seem difficult.
Of course I havent worked yet in front of the Cameron Crazies at Duke yet so maybe crowd noise plays a part.
When it's out of my primary, I may "think" block but if he comes out strong charge on the prelim,...I have no problem yeilding to his call unless I have something out of the ordinary....in which case I'll probably come torwards him to talk it out. Violation - Same thing...if I have a travel that preceded the charge, I'll go right at him to make sure he knows I am taking the violation call.
The key is to not give the pre-lim so quick IN DOUBLE WHISTLES. If you have a no doubt about it charge and you are the lone whistle - sell the crap out of it, why not.
Arent we really talking about awareness of other whistles especially in the paint?
I have no problem ending up with a double foul if we blarge it because it
rarely happens.