Until now, I've been running the boat with a couple of coats of epoxy - I sanded those pretty aggressively with 120, then added another coat. I'm just not sure if I can wait 24-48 hours and then add a coat of varnish over the fresh epoxy, or if I have to wait longer.
In my experience David as long as you are using west 207 or system three silver tip you should be fine already. I have only had issues with blushing hardeners that seem to need several days.