After speaking with a guy who's got the same boat as me in the same area, I followed his suggestion of saturating with smiths CPES (thin penetrating epoxy
which is, allegedly, not quite the same as simply diluting regular epoxy with mek/etc) and following up with 5-6 coats Bristol 2 part poly.
The Bristol is nice because you can apply several coats the same day without sanding
and they all bond together, and it's catalyzed so it's not like thick spots stay gooey. It's crystal clear and absolutely gorgeous. I let my sloppy build-up coats cure for a week, scuffed it and flattened the real sloppy parts
, and applied the final coat tipping with a high quality, big honking brush, bigger brushes
really make a difference for tipping and getting a flat, mirror finish.
If my source is to be believed, it'll last 6 years before needing a scuff and a few maintenance
coats. (She's under a cover for winter). His experience, not mine, but after a year I'm happy to see mine still looking like new.
On the other hand, removing the traditional varnish with a flat scraper and heat gun was straightforward and fast. Not sure what it'll be like to remove what I've got on their now.