From what was known to the Japanese in early May 1945, the best strategy may be to beach Yamato in the Bay of Kagoshima.
See map of approximate coverage of her main guns
http://www.gcmap.com/mapui?R=55km@31.4N130.7E&MS=wls&DU=mi
This way, Yamato is likely disabled by July 1945, before tentative...