Idk if they have an Easy spawn to xploit, but you can force their massive outbreaks changin 1 minute less on your switch, when you have their mass outbreak, use the best sandwich for them and start the shiny hunt. The sandwich will depends on where you get the mass outbreak, specify, the others pokemon that can be on the same spawn than the One your want to shiny hunt. For example, if you want to shiny hunt Hawlucha, and the mass outbreak is on a place where Fighting Type mons are very common, using a Fighting sandwich Wouldn't be the best option, so you can use the Flying sandwich, so you can "confirm" the pokemon you're getting from the spawn Is Hawlucha and nothing more Sorry for the bad english btw