Harry/Brent,
I get where you are both coming from, yes its a sport and no you dont go far from shore, thats all cool. What I am suggesting is that if there is a design for a new PFD/impact vest that is starting from scratch, why not build in pockets so that those people that want to take additional safety aids with them can. If you don’t want to, you don’t have to, simples!
I like to go out prepared (yes I was a boy scout), I currently dont have flares or a radio but if I had somewhere suitable to put them I would. Thats my choice, yours is not to and you probably wont ever need them, hopefully nor will I. Personally I like the saying “better looking at it than for it”. So my request still stands. If someone does design a new one, please build in some pockets for those of us that would like to take stuff out with them 
Ta