I'd consider a deeper pool also. My kids are 10 and 11 and they do cannonballs and jumps and stuff into our 52" pool and frequently bottom out. Even though they know not to dive, slamming your back or your knees on the bottom isn't much fun either. As an adult I can't jump into our pool at all, It's like jumping off a 4 foot wall onto cement and forget cannonballs I'd kill my back.