repair of epoxy-eps board

I.ve got a repair dropped off that is a eps foam/epoxy longboard. The guy says his arms itch when he surfs it. This is an old board and it has weave showing along both rails. It appears it was probably a bad sand job covered by some sort of acrylic that has worn off. He wants me to rehotcoat it. Here my question. On epoxy this old will new epoxy even bond to it? I’m thinking of lightly sanding the rails and recoating them with Gregs epoxy. Will this work? Or, should I just respray the rails with acrylic?