Why would anyone want to do all that extra work? Assistant hounders are often called on to make up shortfalls on donations (and those "shortfalls" are usually quite inflated), draining them financially. They are also called on to help out in field circus, they have to stay late after boasting sessions, and have to follow exemplary guidelines. And for what? They are not going to get any better positions in the New Dark Ages.
Better to just be a regular publisher (if that--even they are helping provide psychic energy to bring Noahide Law through the whole world, which will happen soon enough even without them). You can then listen to rap or heavy metal on your MP3 device or password-protected device without problems (hounders and assistant hounders are generally not able to do this). You can take occasional time off without affecting half the congregation--perhaps to learn something else not related to the religion. You can go on regular vacations (not Israel missions) without half the congregation being stumbled. You don't have half the congregation using your home for facilities. And you don't have to answer directly to the hounder-hounder when that thing comes.
And, as I said, better not to even do anything at all.