Not all kids needs to nap as long as we would wish they would. If he's sleeping for an hour, that might be his lot, especially if he's sleeping well at night.

I put mine on a mat in my room once they turn two as our regs are that we aren't allowed them in cribs after their 2nd birthday and we aren't allowed playpens for sleeping either.

It's never been an issue. Sure, the first week I sometimes have to go up and remind a child to stay on the mat but it's rare.

I would think, if this little one can get out of most things, it won't take him long to figure out a safety pin. LOL