It's possible that:
* You're thinking of a different location: Perhaps you are remembering a different place in the game, or a place from a different fan-made hack.
* You're misremembering the name: It's easy to get names confused, especially when dealing with lots of unique locations in a game.
* There's a mistake in the game: While unlikely, it's possible that a location with the name "Ocean Isle" exists in a specific version of the hack that you're playing, or that it's a misspelling of a different location.
If you can provide more context about the location you're looking for, I might be able to help you further. For example:
* What kind of place are you looking for? Is it a town, a cave, a forest, etc.?
* What's happening there? Are you trying to find a particular Pokémon, trainer, or item?
Let me know and I'll do my best to assist you!