In your case you'll probably need a 'front' and they'll need a cut. I don't do that. However, I can maybe arrange it - (for a "modest" percentage of course. ) You better consider investing your whole PFD. (You should still be able to get yourself a decent fanner. )
Sometimes, the air you 'let in'matters less than the air you 'let out'.
) You better consider investing your whole PFD. 
(You should still be able to get yourself a decent fanner. 
)