This is useless, but I haven't seen this mentioned before:

Initiate drown-on-horse (start sinking in quicksand and climb onto horse while sinking. You'll "drown" anyway and respawn standing on the horse with various effects).

Get horse to die next to deep water so that the horse drifts away / Link's body falls in.

Respawn(?) in deep water without the stamina meter appearing. Actually swimming will once again bring up the stamina meter, but otherwise you can tread water indefinitely. yay I guess.