I currently use a Finis standard snorkel. This one works fine for warm-up, non-fin kicking, LSD style sets. When I try to sprint, it will not stay put no matter how much I tighten it up/change the setup.
A few age groupers use and suggest the ylon-a YSTI snorkle, but was curious what fellow masters thought... anyone have a better one? Anyone try the MP triangular? Are there any with a tear drop or airfoil-esque design?