To avoid the weight of a PFD, I see that some packrafters take an inflatable PFD while others fabricate a vest with pockets to hold air bladders.
Since you need a rain jacket anyways, has anyone sewn pocket into their rain jacket to hold air bladders (Nalgene Canteen fold-up bottles) or pieces of foam?
If so, would you comment on how it worked and show a few photos?
I am thinking of something like this for Class 1 applications.
Anything beyond that, I can carry a PFD to aid recovery of my body. Thank you.