What do you think about this idea ?

If we build a trimaran so that the floats are automatically
filled with water and swung towards the bottom of the main
hull when the boat is upside down then we can make the boat
self-righting in the event of a capsize.

sherwindu wrote:
...
Multihulls have two stable states, upright and upside down,
whereas most monohulls have only one stable state, upright.
...