I use a Shimano gas (CO2 inflated) and my 4 yr old uses a platinum type 1 pfd.
My first question is anyone know if this type will flip him face first in the water, might take it to the local heated swimming pool this w/e to see.
Ive used the yoke type PFD similar to the Shimano on many occasions in military boats and when parachuting over or near a large body of water for obvious safety reasons.
Many people say we are crazy for jumping out of perfectly good aeroplanes(no such thing in my opinion) but at least we always carry a reserve.
If your in a boat with no PFD what have you got to back you up when things turn to S#@T.
Just my thoughts
Danny