A decent rule of thumb is to bring at least 100 betting units (for a 4 hour session). So if your betting unit isR$100, then I'd bringR$10K. That might sound like overkill, but I've had sessions where I've been in for that many bets or more.
A flag bet is a kind of combination bet that bundles together a number of different types of bet into one. It consists of 23 bets, which are made from a total of four selections and it can be a good option for bettors who know the sport and the field they are betting on in thorough detail.