Their help desk at the main office in Denver is pretty good. What is it about GMU that you find complicated? Basically they divide the state up into the GMU based and geographical areas or herd structure. Some of the units (1,2,201, 10 etc...) are managed for trophies so they are hard to get tags for. Other units are easy to get tags for. They publish recaps every season that show the number of preference points for each unit and they also publish harvest statistics for each. This makes it easy to look over several years worth of data and get a historical average.

Another good tool they have on their web site is interactive GMU maps. You can apply various "layers" that will show wildlife densities based on different seasons. In other words you can see where elk are in the summer, fall and winter. This helps indicate possible migration routes or to show likely areas to look for game.

I grew up in CO and have hunted there most of my life. I don't find the GMU too complicated. The regulation brochure clearly tells where the boundaries between each are. WY uses a very similar system.