I would keep searching for any way other than soaking in water again.
Water, and wood, just don't go together, period.
Yes, it'll shrink back after it dries out, but might warp or otherwise change dimensionally.
Darn good question.
As a boater (but never a fan of wood boats, or wood on boats), saltwater is always-oddly enough- preferred, as it's a preservative. Wood rot spores survive/flourish in freshwater only...Wood boaters used to leave blocks of salt in the bilge so that any rainwater entering would become saltwater.