Iron-on black fabric patch from the underside works well. You can purchase fabric patch on line, fabric stores, etc. Remove the top from the car and open on a flat smooth surface with the interior of the top facing up. Cut a circular piece of the iron-on patch about 1/3 larger than the area you want to repair. Using a damp dish towel to protect your car top from scorching, lay the damp towel over the repair area and apply the iron to the damp towel to preheat the repair area. Then quickly apply the circular patch over the hole and place damp towel over the patch and heat again with iron. If you have a steam iron, all the better. Allow the patch to cool completely. Hope this helps!
