Supporter and WSA Plug in

I have set up the supporter plug in and it works beautifully! So if I have multiple themes available for members to choose from and I need to update my google ad code for each theme would I use the WSA plugin?

For example the ad code on single.php for non-supporters, would I have to add it in manually for each theme I want to keep active or can I use the rules option on WSA?

If the rules option is OK to use then how would I code that if statement. Thanks for your help.