They are in there. (And Mountain Lions, and Bobcats, and Grey Fox ) But for yotes I've personally only seen them in there where NF borders up against private properties. My assumption is because of the easier access to water.
Also some of those very small slices of actual public land which border the 74 here and there, you may be able to call one in, in one of those, if it's the super early morning... because sometimes those pieces may have a drainage pipe beside the road to prevent travelling water from creating erosion when it rains. The thing of it is... dew collects on the cool concrete surfaces of them sometimes and drips down and thus creates a lil tiny puddle of water at the bottom of the tube for a lil bit in the dawn before the sun comes up and everything heats up. So you might catch a glimpse of a Doe or a yote getting jumped outta those ditches due to getting nervey about hearing your vehicle approaching.
Long story shorter... it's just plain harder to do in there. Because of the limited vehicle access, and thick terrain. Doesn't mean you can't make it happen. Just understand that it may take an extreme amount of persistence, and a darn lot of hike-in. And it's highly unlikely anyone is going to give you any direction.. because the pickin's are slim. Remember... in terms of deer... it's THEE lowest ranked success-rate zone in the entire state!
I've managed to take 3 Mule Deer and 1 Bobcat from D15 so far. And it is NOT! freakin easy.