Holesaw for Shapers Shortboard Deck Plugs (28mm). The holesaw is a fast efficient and effective of preparing the plugs for installation. The Sawtooth rimmed bits are best suited for foam as the tooth bit does not burn or melt the foam, but rather cut a perfect hole.
Forstner Bits are the creme dela creme of holesaws. The one I received was just slightly wonky (half a mm or so) still works as advertised. All round very good. Make sure to plunge it into some wood a few times first so you don't get random blue paint on your leash plug cutout.
These make easy work of drilling your fin and leggy plugs. Use the Shapers template and make life easy.