As far as hunting techniques go, I would agree with them all. Great advice. As was referred to desert mulies are a tough hunt. Besides the terrain they live in making it tough, the numbers of mulies, let alone good mulies, may be lower than what you are used to. You will do well int implementing all of them, but remember to be adaptive to what ever the terrain, time period, pressure, etc. dictates because the animals will be dictated to by those factors also. In otherwords, don't get stuck on one technique because you may be more comfortable with one over the other. Give em all a try.
Lastly, I would add that the shot opportunities may be longer shots on average than what you are used to. Try and determine what your maximum, proficient shooting distance is and then become more proficient at that distance as often times that distance will be your most presented shot distance. You will be more successful in the desert by doing this because you won't have to push the situation any further at risk of spooking the animal in very tough, stalkable terrain in many cases.
If I repeated any advice from earlier I apologize. Good stuff.