An absolute piece of art.
If it were mine, I would preserve it forever such as these stairs which have been in use for years :
These were covered with a light layer of cloth and then five coats of System Three Silver Tip clear Epoxy. Topped with several coats of varnish for UV protection. A quicker method would be to skip the cloth and use only the epoxy and varnish. Not as good as using cloth but if you're committed to using it this summer, maybe the way to go. Also far better than varnish.
These transom seat, teak strips were treated only with epoxy and varnish but do not receive any physical abuse.
If you're into FG work, worth the investment of time.