Knowing your audience and speaking to their concerns is absolutely critical. This can then help to shape the other appeals you use in order to maximize their impact on your audience.

This is a very important factor as it ensures that your argument is heard at the most effective time. This helps to massively boost how receptive ones audience is to hearing your argument and message.

Logos is probably the most effective tool as it cites logic, statistics, and facts. This creates a mountain of evidence for one's own position which helps strengthen your argument.

Pathos is a very effective tool though it is more powerful on some people than it is on others. Additionally one must be careful that they use it to achieve the intended effect and not create side effects.

Ethos can simultaneously be very powerful and very dangerous. If one overuses it then it can actually make them seem less credible as they are relying solely upon their position for credibility.