My favorite way to see the back country in Hueco is to just throw down the extra cash for a commercial tour. That way I can go wherever I want with my friends. When Andy Klier is my guide I pretty much just let him show me around and we usually end up in some far reaching obscure area on West mountain. The approach is usually the warm up: Climbing up 5.8's, leaping over crevasses, and traversing exposed ledges with a crash pad strapped to my back. The time it takes to get to the boulder problem is one of the best parts about climbing in Hueco. I like to call these adventurous meanderings, "Misguided Tours".
On one misguided tour we found ourselves on all manner of "trad" boulder problems. The fin next to Uncut Yogi for example, Nick actually taped his hands to hand jam. We all did the "hourglass", I arm jammed to finish a beautiful v7 called Belly of the Beast because I couldn't reach the positive crimp another 6 inches away....the list goes on. So, if you come to hueco and you "aren't a boulderer" cause you've been trad climbing or whatever, keep in mind that the only four star problem in the park that Fred Nicole hasn't done is a 35 foot roof crack on north mountain called, "The Morgue" (v5). Happy hunting!