I debated for a number of years during the late 1980s in policy and extemp. I currently am a college professor that coaches students on effective presentations and evidence based research.
I prefer clear arguments that are well supported by credible sources.
Delays due to unorganized cards are discouraged. Decorum and respect for others is important.

Congress: rehash is discouraged, respect for others is important, balanced debate is always possible, acknowledging other competitors by name when responding or extending arguments is a nice touch.

What I'm looking for is a clear, concise argument. Humor is appreciated, but all jokes should be in good taste. I want to see good preparation from competitors as well asadaptability- if you don't have something written, and the splits are bad, switching sides shows dedication. Questioning is an essential part of debate, so you should do that. Zoning out and only speaking when necessary will not do you any favors. Decorum is also an essential part of debate. You should be not just courteous but kind to your competitors. PO's should not just be charismatic but quick as well. The most consistent issue I see across tournaments is PO's taking too long to find the next speaker, whether it be during questioning or actual speeches. Other than that, do your best and pay attention.