Key points when rebutting
Rebuttal can be difficult to master but there are a few areas that debaters should always focus on.

1) Show that there is no good evidence for what their opponent is arguing:

There is no evidence.

The evidence is not reliable.

There is other better evidence.

2) Show that the reason behind the argument is not a good one:

The reason is not important.

The reason is not relevant.

The reason is not logical.

3) Show that there are other issues that need to be considered:

There is another solution to the problem.

The problem is unavoidable.

The solution put forward is unfair or immoral.