Our coach doesn't give specific times or workouts to use the snorkel. I love mine but I'm not sure when it's the best time to use it? I have been using it at the end in the pull sets but can it be effectively used in main cardio focused sets?
As with any swim tool, snorkels can be useful training aids, so long as they are used for a specific purpose and do not turn into a crutch. For example, you can work on your early vertical forearm using a snorkel: https://vimeo.com/82897160
However, it is important to keep in mind that overuse of the snorkel limits swimmers' ability to develop and maintain the proper timing of the breath, and a breathing pattern.
As with any swim tool, snorkels can be useful training aids, so long as they are used for a specific purpose and do not turn into a crutch. For example, you can work on your early vertical forearm using a snorkel: https://vimeo.com/82897160
However, it is important to keep in mind that overuse of the snorkel limits swimmers' ability to develop and maintain the proper timing of the breath, and a breathing pattern.