Ah, another post from Mike
, where he skewers Apple for something. Sometimes I wonder why you haven't gone to PC.
Anyway, Keynote remote is obviously just a gee-whiz app that isn't suitable for real professional use. Your phone is large and swiping at it/staring at it during a presentation is going to be a little WTF.
The solution is a real presenters remote.
(P.S. Bluetooth uses the same frequency bands that 2.4GHz WiFi does. In a real terrible environment loaded with interference to the max, it may be no better than wifi)--
I use Linux, OS X, iOS and Windows. Let the OS wars die.