Retractable telescopic mast? no lines to snag, might have to have a sensor to transmit if its become too top heavy or a vid camera, then the mast simply pulls itself down through the hull, actually it could go right through the hull in its own channel. Carbon fiber golf club shaft or titanium with a carbon fiber wrap? Not big enough to need lines, nut I would researched into an airfoil instead of sails like what Jacques Cousteau used.
Too complex, too many moving parts to fail, not necessary. The sail, mast and rig will be far stronger already than it needs to be. In big waves and wind it will just heel over and lay flat, or even roll and tumble, it won’t matter. It is self-righting and unsinkable.