I was WATCHINg the episode AGAIN with my Night vision Googles and a panama hat on TO spot MORE clues and IT proved a MAMMoth success!!
It appears THAT Hurleys Life-jacket was ACTUALLY the smoke MONSTER in disguises!! When HURLEY reaches in TO GRAB baby erin you CAN see his JACKET on then 1 frame LATER it is GONE!! This proves more OF my theories ABOUT lost and ONCE again propels as the leading Lostigator in the Field!!