What I am looking for on the below answer is a unique thought, I have done my research and seen other answers on other sources and on this website, I am looking for something unique. Please do not just copy from someone else's work because I will google the answer you give me. If you use resources please share as that will help me analyze better.

Gulf columnist Tom Gonzalez writes about fishing and other outdoor sporting activities. Gonzalez commented recently that although interest groups express concerns about the impact of saltwater fishers on the fish population, no one really knows how many people fish for recreation or how many fish they catch. This situation would challenge marketers interested in the population of anglers.

How could a researcher get an accurate sample? One idea would be to contact residents of coastal counties using random digit dialing. This sampling frame would include many, if not all, of the people who fish in the ocean, but it would also include many people who do not fishor who fish for business rather than recreation. A regional agency seeking to gather statistics on anglers, the Atlantic Coastal Cooperative Statistics Program, prefers to develop a sampling frame more related to people who fish.

Another idea would be to use state fishing license records. Privacy would be a drawback, however. Some people might not want their records shared, and they might withhold phone numbers. Further complicating this issue for Atlantic fishing is that most states in the Northeast do not require a license for saltwater fishing. Also exempt in some states are people who fish from the shore and from piers.

A political action group called the Recreational Fishing Alliance suggests that charter fishing businesses collect data.

1. What other criteria besides accuracy would you expect to consider? What sampling methods could help you meet those criteria? (The more explanation the better, I genuinely wanna pick your brain, share your resources as well)