Of all the items in The Wind Waker, one of the most useful is bombs. Bombs can be obtained after visiting Greatfish Isle or by manipulating the overworld layer.
After you obtain the grapple hook, you can Item Slide and superswim to Greatfish Isle with relative ease. If you have completed Dragon Roost Cavern and have the Wind's Requiem, you can set the wind to south after the Greatfish cutscene to trigger being able to enter the King of Red Lions. When you enter the King of Red Lions he will autosail you to Windfall since you haven't completed Forbidden Woods yet as completing Forbidden Woods is the trigger for being able to sail anywhere on the great sea.
Note: In a TAS, it is possible to perform a superswim without item sliding. Because of this, you can get the bombs directly after completing the first visit to Forsaken Fortress.
After you obtain the grapple hook, you can Item Slide and superswim to the Flight Control Platform. While playing the mingame, it is possible to angle up and Island Hop out of the quadrant to dragon roost island and perfrom an Item Slide Superswim to Windfall where the pirate ship will now be. The reason for this is because the Flight Control Platform minigame takes place on an overworld layer (state) which also happens to spawn the pirate ship at Windfall. Since the layer resets when Link voids out or enters a new area, you cannot drown during the superswim to Windfall and you must do Password Skip to get inside.