This is an odd video to make so I had to show the original 2013 Great Bay bug first before I showed what the fix was. You only need to import the stage, no code required.

Basically, I edited the stage to be far away from a "Danger Zone" area bots hate. How far? The stage was moved 40 Y values up. And I made new shadow models to more accurately render character shadows. This stage is functionally and visually the same, so if you don't care about CPUs... no need to get this.

This was made using the very first Great Bay Import done by Ryan, Mewtwo2000 and DSX8 on 2013 as base.

Discoveries and research was made by The Brawl Stage Compendium's members Eon_TAS, Soopercool and MarioDox.

Mewtwo2000 edit: New edit for this version of Great Bay. Better versions are to be released, but while they're still not there, I've made some edits to this one and I wanted to share them. To be used over JUNGLE JAPES or FINAL DESTINATION.

Original text by Ryan:
After many requests i decided to upload my version of Great Bay!

Comes with stage select icon, preview picture and name logo.

Thanks to DSX8 who imported the model and made some animations and thanks to Mewtwo2000 who helped me animating the water and made it swimmable. I spend hours to edit every texture to get a more Melee shaded look.

All issues got fixed as well but there is one last known problem with the CPU players who acting kinda strange because of the water and this can't be fixed as long as there is swimm-able water.