mount coronet is in the sinnoh region. that's Pokemon diamond pearl and platinum.
the east of hearthome
in the top of mtcoronet
theres no such thing
i smell bad
go in by Hearthome city
You have to as it is a main part of the storyline.
well its in mtcoronet if you need help with the sunnyshoe gym.
Use HM Waterfall
not sure you have to keep searching (haven't been there in a long time)
you see him at spear pillar where you catch palkia and dialga or arceus
same place as in Pokemon D/P, west from celestic, east from eterna, and south-east from snowpoint.
You buy a gameshark ad cheat through it.