Re: Footings Covered by Concrete Pad
did you not make a diagram of where your footings were going to be in the first place?
if you did just refer to that, technically you can drop your posts on the pad where teh footings are, you just need to install post anchors first so the posts dont kick out.
your best bet is to spend the extra money and get the type of bracket which creates an air space so the post isnt in direct contact with the concrete and allows air flow underneath which greatly reduces the chance of rot
fire up the saw and make some dust