Qdog, I have tried cutting bags in half lengthwise, sealing the resulting edge, and then sealing from the short end as usual. This was to fit a long, slender item that I wanted to protect in shipping. It seemed to work just fine. So ... I wonder if it would be possible to cut off the side seam from two bags, and seal the two bags together to make one large bag??? The problem I can anticipate would be how to seal the bottom at that point, since it would be too wide to fit (at least in my sealer). Hmm ...
Which raises a question for me -- are the turkey size bags wider, and if so, how does one seal them if they don't fit the sealer unit??