Once you get a pokeradar (150k in the item market), you need to buy
batteries which cost 50,000. Your batteries will die every time you
finish a hunt. After that, turn the radar on and hatch the pokemon
you want to chain. keep chaining the pokemon until you hatch a
shiny aaaand. that's it.
Oh and if you want to change your hunt in the middle of another
hunt, you have to break that chain and start over with the new
pokemon.
I have failed