I will have a few dime to quarter sized holes from where a basketball goal was mounted above the garage door. I plan to take the goal down as soon as I get some advice on how to patch the holes up. The siding are 4x8 sheets of painted HardiPanel and I would rather not try to replace the whole piece for just a few holes. How do I go about correctly patching and sealing these holes? Do I screw a patch piece behind the hole similiar to a drywall hole repair? What would I use to fill the void after the patch is screwed behind the holes? Any tips or advice would be much appreciated!!! Thanks!