Bob, I wont be there again this year but one year you will find me there, count on it LOL
BTW, I was just playing with Google Earth and entered the GPS coordinates you have given.
Our Quartzsite campsite is on the Bureau of Land Management Long Term Visitor's Area at Tyson's Wash, La Posa West section #541. The GPS coordinates are N33.38.054 and W114.13.591.
And attached is the Google Earth file showing what I found at those coordinates. How far out was it? It really doesn't look like the same place at all... ahhh, rats, it wont let me post a KMZ file.
Oh well, here is a screen grab of the marker point.