Decagrab

Young Link (and other tether characters) can boost grab farther into their dash attack due to boost grab shift. Once the grapple disappears, the boost grab window is shifted relative to the current frame. Grapple should be canceled very early in the animation so it returns later.

Normal boost grab window is frame 2-4 of dash attack, so the grapple must not disappear until frame 5+ of your dash attack in order to get the hitbox out and still be able to get the grab.