I'd use some fairly rough (say 80 grit) paper to sand the fuzz off, then maybe some 120 grit before going back eo applying the paint.

> So, after searching around for a two part polyurethane, finding
> and buying the same, I finally got the temp window I needed and I
> set off for the great paint.

> The problem was not on the first coat. It went on great, smooth
> and consistent. I got the feel of the paint and began tipping out
> in very short sections. I discarded the first roller, a short nap
> roller recommended by the paint dealer, let the stuff dry for two
> hours and came back for the second coat. All to the mfrs specs. So
> far so good. The second coat prep was the same. This time the roller
> began to SHED fibre.Two hours later I have a glossy, white shag kayak.
> Can sanding remove the fuzz and provide a good base for a third coat?
> How much sanding? How long for the paint to cure? I was told that
> the foam rollers would cause a problem. What do I have now? Help.
> Brian