[Spikey]

There is still so much left open here. The correct bluffing frequency is also a function of how much you bet, and the 2:1 you are quoting assumes a pot limit bet from memory.
Also how many players still there at the flop is also important. With 2 or more players I actually bet for value hoping that they call because you are getting over 2:1 on a slightly better than 2:1 shot on your money. Invariably though I find I often only get one caller making the bet a bad one, but still there's still lot's that can happen on the turn and river to give implied odds and things.
The bluffing frequency is also of course, dependant on the opponent folding at the correct frequency. If he folds more then you can bluff more, if he always calls then you should not bluff at all.
This original problem is far to complicated to be solved simply on this thread I think.
BTW: I haven't been here for a long time and hello to anyone that maybe recognises me, although I don't think there would be many.
Good afternoon.