A Horn or craps-11 bet, as it is typically called, is a one-roll wager that on the next roll of the dice their sum will be 2, 3, 11 or 12. If they total anything different (4, 5, 6, 7, 8, 9 or 10), you lose. If 3 or 11 appears, you are paid 15:1.
A round robin (RR) bet allows you to combine multiple parlays into one bet. The more selections you make, the more parlay combinations you will have in your RR. Once you make your selections, an RR will create parlays of all possible combinations between them.
The truth is that there is no trick to slot machines. They provide random results based on set mechanics and it all comes down to luck. With that being said, not all games are the same, so picking the right options is key, and you can still change the size of the bet throughout the session for better results.
Players sit at the machines they were randomly assigned during tournament registration. When the tournament timer begins, everyone in the session hits the spin reels button and/or the bonus pop-ups on their machine and plays for the duration of the countdown.