How to bet Trifectas

The box: If you can’t separate the top three contenders.
The key: If you have a “dominant” contender, put him in the win spot and box the other contenders in the two spots below him.
The part wheel: A mixture of the key and the box where more than one contender is placed in the win slot with other contenders below them.
Straight: select three horses in exact order.
The best way: Determine your strongest contender “A” and your other contenders as “B”. Any improving horse would be “C”. The bet structure would look like this: AC/ABC/BC and for $1 Trifectas would cost $3. If you liked 4 runners in the “B’ slot, the cost would be $12.