I just pictured an amazing hnh world in my head. It looks like this:
The world is seperated in a few continents with a pretty big sea seperating them.
Rivers flow through the continents containing shallow water (as it is now) and in the middle undeep water.
You can swim accros the undeep water without losing too much stamina (so much easier as it is now). The shallow water remains the same.
Maybe you should be able too build a little raft (for one person and no animals) which can cross undeep water but goes as slow as crawl speed. This way people shall not find any interest in going down a river with such slow vehicle and it'll be safer to scross a river without dying in a server crashIn the open sea and in lakes you can find deep water. Deep water can be crossed by boat, undeep water and shallow water can't.
The sea has a shore of shallow water and at the edge of a (pretty big) shallow water shore the deep water starts.
To make things more clear:

1= Deep water (can cross with boat, can swim)
2= Shallow water (cannot cross with boat, can walk over)
3= Undeep water (cannot cross with boat, can swim)
4= Sand
5= Forest terrain
What do you guys think if this?
