SRG conducted a national survey of all fifty states and several territories about boating experiences in order to assist the U.S. Coast Guard in developing boating safety policy. This project consisted of a mail-out survey of 12,500 registered boaters and a screening telephone survey of over 50,000 citizens, with an objective of identifying and conducting an in-depth interview of a random sample of 12,500 boaters who do not own a boat (nonregistered boaters). Nonregistered boaters were identified through a screening process in which telephone numbers are randomly generated and called to determine if the number is a household, and then by asking a series of screening questions to determine whether a nonregistered boater resided in the household. If more than one potential respondent was identified, a random sampling method was then used to choose the respondent who would be asked to complete the survey. The incidence rate of finding the target population of nonregistered boaters averaged 15%.