We had the exact same problem with our boy. I would have to make sure he was fast asleep (in my arms), then wrap him and then rock him again to make sure he was well and truly asleep otherwise he would Houdini his way out and the whole process would start again. Sleeping bags weren't an option for us either as he would smack himself in the face and wake up as a result - his startle reflex was so strong. It was all doing my head in

Like nattyfred, the only solution we could find was to sleep him on his tummy. He has always been a strong little boy and he could lift his head easily. It was a tough decision with all the SIDs warning etc. but just seeing our boy actually get some decent sleep on his tummy was what made us stick with it. Now that he is older he has chosen to sleep on his back. I am not advocating tummy sleeping at all and if DS was ok being wrapped we would never have done it. Having said that, it was the only way we could solve the issue.

I know how hard it is having an escape artist in the house