In my situation it's not very often I need to make changes which require the animal to be moved. Spot cleaning, adding substrate or enclosure furniture etc can usually be done with the monitor(s) there. They usually just go into their hide spot and come out to investigate later, when they think I'm gone. I find that after a few months they get a handle on what's 'normal' (vs a one-off) anyway, so if I do have to handle them for some reason it may cause them to lay low for a couple of days but they quickly go back to routine.