I have a pair of the black corcoran combat boots on amazon, and i noticed that is has this big seam running down the back and to what i understand that is called a "back seam" and that is keeps the boot uppers together. http://www.neimanmarcus.com/p/Chloe-Back-Seam-Pull-On-Boot-Boots/prod144600079/ http://www.amazon.com/Corcoran-Mens-10-Inch-Plain-Sole/dp/B002CWBE4U My main question is, even in WW2 boot's there were made with more or less the same pattern, but i want to create my own black combat boots WITHOUT a back seam and instead have the boot upper just one big piece of leather. with the heel cup stitched on with no seam or separation in the back of any kind. Is this possible? if not please tell me why. thank you!