I watched my father get crushed and killed by his 73 Polara Wagon in front of our garage. Don't put your son through this. Its something I lived with for years. My son was one year old when this happened. All I can do is tell him about the good times with my father. Don't Let this be your sons future. I will never forget that day , And the look on my dads dying face.
Please for your sons sake. Buy, rent, or borrow the proper equipment. If for any reason to teach him there is a safe way for everything you do. Life is short enough without being stupid. I hope you take this advise because it only takes one slip up and you may lose him or he may lose you. Remember you won't be here forever to watch over him. Teach him well. Steve