The mahogany piece started out at 1" x 1.5". I wrapped some sand paper around a pipe and shaped the back of it to fit the rounded end of the keel trunk. I used thickened epoxy to attach the mahogany to the keel trunk. Then I used screws that were long enough to go through the cleat, the wood and finally go about 1/4" into the keel trunk itself. It's subjected to shearing forces, so it should hold. The keel locking line is attached to the keel cap at an eyestrap, also loaded in shear.