I love topwater action and my favorite pattern is the Gartside Gurgler. I can fish it on the surface or just below. I have tied in on hooks ranging from 14 to 5/0.
But more often than not, topwater presentations are not optimal for the conditions so you will find a clouser minnow in my tippet more than any other pattern. I have tied them on hooks from 12 to 6/0.