Another tip, which goes for any animals. If you can get the game head in a freezer, and the temperature outside is not cold, then buy some "Spot-Rot". I use this stuff, especially on hunting trips where I have a long drive home, or can't get the hide on ice quick enough. It's available at your taxidermy suppliers, and will give your the extra day or maybe 2 in warm conditions, without hair slippage. It's works great and well worth the money. But that's only it you want to save the cape. Good luck.

Here's some more info on it.
http://www.whitetailsystems.com/Stop-RotPage2.html