For Lincoln-Douglas debates, I look for clearly articulated value and criterion, with opening case statement arguments that are closely related to the value and criterion.

Arguments that are overly structured with complicated subset points begin to lose effectiveness; a clean, clear structure is more convincing.

The pace of speaking should not be so rapid, in haste to make as many points as possible, that the judge cannot clearly discern the arguments being made. A well designed argument is more convincing than rushed speaking where the judge may not be able to acutally discern the points the debater is trying to make.

NEG should focus in the case statement period more on building a strong argument rather than using an inordinate fraction of time to initiate rebuttal; if the case statement is made stronger, and minimal time devoted to the beginning of rebuttal, the NEG argument will probably withstand AFF rebuttal better.

Both AFF and NEG should avoid such phrases in rebuttal like "...if you don't buy that argument..." Such language suggests uncertainty in the argument just presented, which undermines its effectiveness.