I ran out of the yellow rollers and wanted to keep putting layers of epoxy on my paddle board.  I was at Home Depot and picked up their 4 inch “Doors and Cabinets” high density foam rollers.  I was amazed at how well these rollers worked.  I was able to put on very thin even coats without bubbles.  I will put on one more coat of epoxy and then see how these rollers work with schooner varnish.