Try to match it to any bait size you might see or what your rod will cast. Go slightly bigger than smaller. For Spanish, which is about all I use them for except the occasional blue, I like the white body with red head. Tie the line directly to it and reel fast with some jerking motion. It can get intense when a school gets within casting distance and the seagulls are working the baitfish too. Try to avoid catching a bird.
