Denny, great idea for exclusive AHA member content.
I am personally very interested and want to learn more about Top Cropping Yeast. The knowledge in publications (mags, books, etc.) is usually just very general and not the main topic. I love to hear an expert that top crops regularly on techniques, when and how, what the yeast looks like, viability, and effects or drift of yeast from batch to batch. Either homebrewers or pro brewers that top crop would be great. I think the D.L. Geary Brewing Co. in Maine top crops, but I don't know of many other pro brewers that do.