Some Good OLD links: Done some digging
http://newspapers.nla.gov.au/ndp/del/article/14952503?searchTerm=hydroplane#pstart1313822
Here is the link Pre 1930's
Hydroplanes:
http://newspapers.nla.gov.au/ndp/del/search?searchTerm=hydroplane
Powerboat
http://newspapers.nla.gov.au/ndp/del/search?searchTerm=powerboat&within=new&withinSearchTerm=hydroplane
Good stuff.
http://newspapers.nla.gov.au/ndp/del/article/14952503?searchTerm=hydroplane#pstart1313822
Here is the link Pre 1930's
Hydroplanes:
http://newspapers.nla.gov.au/ndp/del/search?searchTerm=hydroplane
Powerboat
http://newspapers.nla.gov.au/ndp/del/search?searchTerm=powerboat&within=new&withinSearchTerm=hydroplane
Good stuff.