> Just finished a stitch & glue (my second). Wanted to paddle during
> those weeks I'm advised to wait until the epoxy is getting fully cured
> before varnishing. Getting into the water the epoxy top layer became
> whitish. What did go wrong? What to do?

If you paddled in salt water, it could be salt residue. Did you try washing it off. My unvarnished stitch & glue always has a white residue on it until I rinse it with fresh water.

Mike