Let's say you see a very favourable trade setup. For example, something with a 75% win rate and a 5:1 payout. Obviously, the Kelly Rule recommends betting way too much to be sane. My question is what should be the absolute maximum bet size for really favourable conviction plays. If we assume that no trade can ever be known to have a win rate of over 75%, due to the inherent uncertainty of markets, what is the maximum optimal bet size for these slam dunk trades with high conviction and excellent potential payouts when they work? Assume a maximum drawdown tolerance of 20%.