the way i repair holes in epp and epo is the same. If the hole goes all the way thru, like on a leading edge i will put painters tape on the back side, than mix up some gorilla glue and water, put into hole and put tape on the top. If its a leading or trailing edge wrap the tape around to match the profile. After 2 hrs you can take the tape off. may have to wait a little bit longer, but basically sand to shape if it pushed the tape out while setting.