The importance of water on the map.

I am currently making a map entirely on water. Land is used only as a base. The point of the map is to collect the Admiral's Hat, then it will be easier. I think the map will turn out very interesting even without land

Here, you have exactly the opportunity to prove that water shouldn't be retired.

Message from AzteC3:
I'd like to know how you disable water!?

It is very simple here. When creating a random map, there is a Water Level option (or in some versions, the amount of water); if you set it to "none", there will be no water; "normal" produces maps sometimes with water, sometimes without, or with a small amount of water; and "islands" speaks for itself. Although, the pleasure of playing on a large random map created under "islands" is extremely questionable.