Rene, I think everyone has worried
about people playing with the pin at some time. Walmart now sells a
very cheap locking pin for like $5. You have to buy your own little paddock for
it, but I think it's worth it. They also have more expensive ones if you want
them. I had to buy one because my husband kept taking off and hiding my
receiver, with the ball, after my recent injury, so that I couldn't ride
while he was gone at work, until the doctors said it was okay.