multihull centerboard foil shapes

What are some good resources for information on centerboard foil shapes and total area for a catamaran?

 

You might try this: Library Advanced Search http://library.sailyachtresearch.org/tech-resources/library-advanced-search/libraryAdvancedSearch?layout=result_search&text_search=&keyword=&title=&author=&publication=33&location=&start_year=&end_year=2017&id_library=&type=&ordering=&limit=5

 

Such a hugely broad question is impossible to answer, though some idea about the design, it's performance envelop, etc. would be helpful. This said, if she's remotely able to get out of her own way, the 5 digit 63 or 64 NACA series would be a safe bet.

 

Bridge Deck Centerboard(s)

You might have a look thru this rather lengthy discussion
Bridgedeck centreboard why don't they work??? https://www.boatdesign.net/threads/bridgedeck-centreboard-why-dont-they-work.57051/