I'm pretty sure it has an SMC hull (sheet moulded compound), because most of the Yama's pre-08 used this material. Most SMC is painted I think. I know that you can't use polyester resin on it (only epoxy). You will probably be OK with any epoxy-based repair system. Check out this link: http://www.pwcforum.com/general-pwc-jetski-discussion/317-fiberglass-repair-instructions.htmlI have a 2003 GP1300R that has some dock rash I want to fix, does anyone know if it is paint or gelcoat. spectrum colors has gel coat for up to 2002, did they change. any info would be great. Thanks.