I have searched endlessly for a jam cleat screws from the side. To date, I have yet to find one. I took my spreader bar to a machine shop and had them weld a stainless steel plate to the bar that the cleat could mount to. That works just fine. Another option is to tie S hooks on the chicken line. With some fancy rigging you can make them easily adjustable. Just be sure the S hook is hooked to the dogbone, not any part of the crew so in event of a capsize, the crew won't be left hanging (literally)