Bwht4x4,
I agree...it gets complicated.
There really is no way of knowing about the Random VS Preference point for sure. The maximum is a 75-25 split, so 75% of tags go to the top preference holders if there is high enough demand. However, if there are leftover tags from the Preference pool, they drop into the random pool.
Depending on the unit, the number of applicants in the Random and Preference pools, and special VS. regular all those things can really influence your draw odds.
The advice to really study the odds in all the various pools is critical if you want to draw.
It about takes an abacus, an MIT Math Major, and a roll of the chicken bones to calculate draw odds in Wyoming...