DC,
I've never found anything particularly informative on the web in the way of FT reports - I've certainly gone looking quite hard occasionally.
The one little glimmer of usefulness is that the FAA post their manuals, including some quite useful FT manuals such as AC23-8 (light aircraft flight testing) or their homebuilt flight test manual on a US gov. website somewhere (give me until I'm back in the office on Monday and I can give you the web address).
There are also a couple of snippets on little aeroplane testing by Darrol Stinton and Bill Brooks on the RAeS website at
http://www.raes.org.uk/light-av/index.htm
Regards,
G