For bare EPP foam planes like our Stingray, we find these tricks help the plane last longer with hard abuse:

Consider using "Quck Grip" glue instead of CA for repairs and some assembly steps where front end collisions happen. It is like rubber cement and dries flexible. Quck Grip is thin, easy to apply and doesn't cost much. We find it at Walmart. We also use "Plasti Dip" thinned with napthalene to paint 3 coats onto the front points of the Stingray just past where the front of the fan meets the wings. (don't paint the whole plane!) It makes a nice "skin" that holds up great for crashes. Plasti Dip is available at Home Depot in many colors including white.