I approve of the "generate a shitload of entropy and hash it" method. The reason I recommended my method is because it could be done with pen&paper, without any external functions. You can actually get a full hex private key without touching any external scripts or figuring out how to securely/privately execute hashes. Can be useful in some situations for people with nil programming experience.
But will Bitcoin-QT import a private key directly? (not WIF) I am aware it has no checksum etc. Or would I need to rely on additional tools to ensure I generate the correct WIF key (example - bitcoin-bash-tools and bitaddress JS).
Roll the dice 100 times. Write down the sequence.
Example:
3315135445366124436162446626244624624266466466622442224426424444624626624246264 464464662624246262224
Then you use that as the brain wallet passphrase in bitaddress.org
If I append "1", "2", "3" etc to the original series of rolls (seed) - sha256sum(3315135445366124436162446626244624624266466466622442224426424444624626624246264
464464662624246262224
1) .. does this constitute a "secure" method for generating a series of addresses?
Another way to do this, for "perfect" entropy calculation is to roll six-sided dice and write down bits. Then convert those directly to a private key.
So, about 150 rolls of the dice?