You can varnish as soon as you have removed the gloss. For really deep scratches you might consider painting a little epoxy right on the scratch, but you don't need to coat the whole boat on account of a few scratches.

I would try to remove as much varnish as possible before applying another coat of glass. The epoxy-to-epoxy bond will be better than the epoxy-to-varnish-to-epoxy bond.

Don't use the skinned over varnish. It will be thick and painful to apply in a smooth coat. You might be able to thin it, but if you want a nice coat, get a new can.

: My questions are 1. Can I varnish again over them at this "smooth
: sanded" time or should I sand down to glass pattern, reepoxy, resand
: and then varnish?

: 2. My "Captains" varnish has a 1/8" hard skim on top of it
: after setting a year. Can I use the liquid varnish underneath as is or
: should it be thinned? The first time I usd it right out of the can and it
: worked fine.

: 3. If I want to put another layer of glass over the places that get the most
: abuse, can I do it right after my complete sanding which takes all the
: gloss off the present hull? Any unusual prep different from the initial
: building?

: Thanks for your help, I've learned a lot from this board. Doing two more
: boats soon.

: Randy