I was surprised about the number of boats crossing the Pacific with a dinghy on davits - starting with all of the multihulls and including a reasonable number of monohulls. Many of the monos had vane steering which makes davits extremely difficult if not impossible. I would put on a cover, perhaps with supports under it (plastic pipe comes to mind). Also make sure the drain is open.
Finished the circumnavigation in early February in Grenada. Have to work on a book project for the next several months so the boat will be waiting for next year.