Outside of Shane Van Boening, and a few of the German players, very few of the top pros practice very much, on a daily basis...because they don't have to! They may practice a few hours a day, for 2-3 days prior to a tournament...but that's about it. Once you attain that high level of proficiency, you never lose it. It is, after all, very similar to riding a bike! 
Scott Lee
www.poolknowledge.com

Scott Lee
www.poolknowledge.com