My 40+ year old neighbor decided to get his very own basball pitching
machine and wack balls directly into my yard where my 2 and 4 year olds
play regularly. The machine pitches 50 - 60 mph semi-hard balls. I need
opinions or ideas on how to stop this ignorant person.

The most recent episode occurred when he missed my 2 year old toddler
with a ball by a few feet. I then waited and watched as he continued to
hit the balls into my yard. Then another one came in. I immediately
then notified him that my kids are playing in my yard (he has four
yound kids and toddlers of his own) and he said "don't worry, they are
only pop-ups". I then asked questionaly and politely: "How would you
like it if I hit these balls into your yard?". He replied "I wouldn't
care", then invited me to hit a few. What was I to do or say to be a
decent neighbor, so I accepted, also so I could see more closely what
he was doing.

I don't know how to stop a person who is either really or pretending to
be ignorant. He has other options to hit the balls towards the other
side or back of his property. I need to prevent this before something
really serious happens.

I was thinking of continuing to reprimand him (which I believe will not
work if he refuses to acknowledge the problem) or to start hitting hard
golf balls into his yard. Which would you chose? Have you had similar
experiences? Do you have any suggestions to help me?