Nice boat - looks like a Reedcraft. Original trailer too, which is a bonus. Mine is similar. They suffer from gelcoat crazing but I sorted mine by using a proper grp primer to fill the cracks and then Sadolin White Woodshield, an expensive water- based highly-pigmented resin paint that I have used for many years on exterior woodwork! Sounds crazy but it has out-performed any oil-based paint I've ever used on grp. Sadolin are interested in this as they have never tried it on grp. All I can say is that it works - and my boat lives in a harbour with salt water and harsh sunlight that destroys marine oil-based paints in two seasons.
Enjoy the boat - they sail really well and cope with rough conditions, providing you reef early.