pvc is waterproof so no need to seal it. you'll have to primer it before painting.
it will hold screw eyes well. drill a pilot hole first, thread the screw eye in, remove it, use a pin to put in some 5 min. epoxy and thread the screw eye back in.
here are some i finished a few weeks ago.
http://www.bassresource.com/bass_fishing_forums/YaBB.pl?num=1298330721