They will usually leave you alone. If they continue to hassle you advise the tournament director that Team X is pressing critics for decisions and that you do not appreciate it. Occasionally, however, tournaments sanction oral critiques or immediate decisions. If that is the case, by all means comply. Please fill out the ballots completely.
Debaters deserve feedback from their judges.
Debaters put in numerous hours researching, practicing, and preparing. They deserve to know why you voted a particular way. You should write at least a paragraph or two on each ballot. Describe desirable and undesirable techniques used by each team and give a clear reason for decision. Additionally, be sure to fill in the box material, the point totals, the code and school name of the winning team, the first and last names of each speaker, and whether it is a low-point win.