Strengths and Weaknesses of Drop-off Surveys
Strengths
Convenience: Like the mail survey, the drop-off survey allows the respondents to answer the survey at their own convenience.
Response Rates: The response rates for the drop-off survey are better than the mail survey because it allows the interviewer to make personal contact with the respondent, to explain the importance of the survey, and to answer any questions or concerns the respondent might have.
Weaknesses
Time: Because of the personal contact this method requires, this method takes considerably more time than the mail survey.
Sampling: Because of the time it takes to make personal contact with the respondents, the universe of this kind of survey will be considerably smaller than the mail survey pool of respondents.
Response: The response rate for this type of survey, although considerably better than the mail survey, is still not as high as the response rate you will achieve with an oral survey.