The point of caching is to enjoy it with other people. Share the experience, and if you happen to be a family it is a great family activity. I cache with my son and he is 7. If there wee a Childs PM Say for 12 and under , at a reduced rate of say $12/year. It is frustrating when they cache with you and you cannot log their caches. I am not even going to reduce myself to the shortcuts mentioned earlier. This is a great activity and people that look to circumvent the system are the ones that ruin it for everyone.
Let's just be realistic and develop a child's membership, or a Family membership with say 4 PM's available for say $75.
This does not seem like a difficult issue so let's stop talking about it and JFDI!!!