Ok, with the action replay code moonjump, I got Knuckles into emerald coast and I got to the windy and ripply part. There is a spring that appears, go and jump on it, or just use moonjump, now just keep on pressing the jump and glide and Knuckles will actually kinda of fly! Now turn to the right and right again and you should see land! keep on flying to the land and you will be in Sonic's part of windy and ripply! Now finish the level like you would with Sonic beat it and you will be sent to the flashback with Tikal in but she isn't there! Have fun looking around!