If you are diving the transpac you don't need to use a back plate as well. It is designed to work with single cylinders out of the box. There are many single cylinder wings that would work great. I went with an OMS wing because they had the style/lift combo I was looking for. There are a few other manufacturers that make wings out there, and MOST of them work with the Transpac. Just make sure the wing has the slits built in to it to allow the straps to go through. A few of them ONLY have the mounting holes and not the slits.