I'm moving every day if I'm not into elk, I'll even move a drainage over during midday if I don't have any action in the morning, if I'm into elk I stop moving and hunt as long as the elk are there, I don't have a lot of patience waiting for elk to show up in an area, if they are not there I'm covering ground to find them, my metric for being into elk to a point of being worth hunting them is actually laying eyes on elk in a huntable spot, I don't really put much stock in sign, there might have been a ton of elk there last week, that's not really all that helpful now...
that said, I don't usually jump entire units all that fast, I try to camp where I have at least 4-5 days of drainages to check out before I pull stakes and move camp, pretty much a mini grid of an area, getting up high and glassing if possible and trying to eliminate as many areas as possible, by the time I leave I'm pretty confident I'm not leaving anything on the table, moving camp can be a pain and cut into hunting time so I try to keep big moves to a minimum.
The one situation I can see moving entire units quickly is if you realize you don't like the style of hunting, IE units that are hard to glass if glassing is your preferred style, or really open units if you want to call, in that case, figure out how you want to be hunting and find the spot that matches that style best, it might be a totally different unit...