Answers to your questions
I moved our Plano boxes over to the Ugly bag today, It appears to hold five boxes easily. I put in our four boxes that are approximately 9 x 14, plus a smaller one. There's a zippered pocket on the front, too.
Our Plano fanny packs came from Jerry's Sports Center, a wholesale fishing supplier, but I found it on-line at BiMart for $17.49. The Plano product number is PLA 335006 and it holds two of the small boxes, item number PLA2350000. The BIMart item # is 601130. I hope this link works: http://www.BiMart.com/itemdetail.aspx?ItemNo=601130
Roberta