Found a thread on chest packs vs fly vests (http://www.flyfish.com/forum/gear/messages/3339.html). I'm away on travel and had nothing to do but drop by a Wal-Mart, where I found the absolutely perfect cordura tackle bag for shore flycasting. It takes 3 med. fly bags, multiple spools/reels, at least 5 tippet spools, and has all sorts of neat places for odds'n ends. Best of all, it's $7.96!!! at Wal-Mart, at least down here in Ft. Lauderdale. I can get everything I want into it, and it slings on the back just right. I've been eying the Orvis 'vest on the chest', but at $89.60, thought I could find a better buy. Here it is!
The bag is made by Eastport, found in the women's purse section. It's approx. 8" wide, 12" tall, and has a whole bunch of compartments. It's just right.