L.M.
Since your are on the coast, what about "Sending Cancer Out To Sea" or "Bon Voyage Cancer!" or "Surfing For A Cure" ?
"Sipping Cocktails and Fighting Cancer"
"Moms Making a Difference"
**Just read some other posts and I like Martini or Margarita Mamas too. Another idea I had from another poster is "Finding the anwer to cancer".