Erwan,
The leeward wing folds up when you tack but you can deploy it partially if you need to put the crew on it to lift the windward hull in light air to cut the wetted surface drag.
The way the bouyancy is distributed in the vertical plane the hull shape benefits greatly from lifting the windward hull.

Please keep us / me informed, it would be great to see your system work.
Regards,
Phill

I know that the voices in my head aint real,
but they have some pretty good ideas.
There is no such thing as a quick fix and I've never had free lunch!