Re: Ladies, How do you cart your flyboxes?
I got the Orvis Safe Passage Sling Pack last year. It does hold a lot, but I am a minimalist and I prefer something smaller to wear on stream. The fly boxes I own (5 or 6) remain in the Sling Pack in the vehicle, while I load up my Fishpond San Juan chest pack (which fits nicely under the built-in one) with the flies I plan to use for the day.
I took off the thin, bottom strap and run the wading belt through the belt loop in the pack. I don't wear the neck strap around my neck (hurts after a while), I lengthen it and wear it around my body, so I can move the pack around to the side if it gets in my way. This suits most locations I fish.
Vests are out of the question, I found myself putting everything I owned in them.