Replying to Fixing skis with chunk out of them

My brother loves to ski, he is 12 years old, hes not taht great, but he got his first pair of twin tips this season. He got the Jr. 1080s last years, the camo sor of one, and when we were driving out to the hill his skis bounced around in the back of the truck, and a chunk abou 2 cm big got ripped off on the ski behind the binding about 10 cm. i can see the foam, and like a carbon strip or something on top, should i expoxy it? will that work? the sdkis are still rideable and fine now, but we want to fix it before it gets worse