IMO, the best way to manage it is to get a super diverse tank with real ocean live rock and give it some time to populate everywhere with microfauna. Sometimes you have to do this every half a decade or so. If tomont falls off of my fish, it will be greeted by a bunch of hungry organisms in the sand and on the rocks and become a meal. This is not eradication, but I have long since decided that keeping it out is a fools errand for me (and most).
I also isolate fish in a tank with live rock and sand until they are eating well and not skittish. This does require another tank like QT, but it is to make sure that the fish are healthy and well adjusted.
I would never do this because it is not responsible, but if I dropped a ich riddled PBT or Hippo into my display, it is not likely that any other fish would get the ich... and if they did, maybe one spot for one cycle and then everything would be good. I know this because this is what happens in the isolation tanks with other fish in there.
This used to be what people did before BRS, YouTube and whatever convinced people that pests are bad and to start with dry/dead rock and go BB. Old advice was to just wait six months or a year to get a tricky fish and that was because your tank was ready to devour some parasites. Now, people set up a sterile petri dish and spend 10x the cost that they saved on dry rock to treat disease and hair algae than if they would have just bought some real live rock. ...all for what? For some pests that most people never get and that can be taken care of in a day or two before the rock goes into the display? ...always has been ridiculous to me.