If you're managing peoples money in real life, you can't create any kind of "optimal" bet size that will slingshot you through a drawdown.
As you increase the trading size, in general you water down the levels of absolute risk and positive risks associated with your edge, and you have to become more concerned with either generating an income stream, or something of a more unique nature - like an asset class or returns generated by uncorrelated risks to traditional long only portfolios.
There is no way around dealing with clients who want absolute returns, steady earnings etc... the conflict lies in the fact that absolute returns, in order to be uncorrelated with the clients existing capital, require trading through volatile Markets, long periods of losses, all of which are characteristics of these alternate asset classes.
But to naively assume that there is some bet size method you can deploy at any given spot along the equity curve is akin to fool's gold.