Shai drop

On a platform, dash and buffer analog stick down, then hit shield 3–4 frames later. If done correctly, you will get a frame-perfect Shield drop. If you get spotdodge, you hit shield too early; if you get down-angled shield, you hit it too late.

A two-frame window can be made consistent but is still not exactly easy. Moreover, this has no real advantages over the “instant notch method” of shield dropping, so it has generally fallen out of favour.