On highly flocculant yeast, like WLP002, I put a 1 1/2" stir-bar in the fermenting bucket after adding the wort. I took a Menards 5 gallon paint stick and glued one of the extra hard drive magnets to one end. As the fermentation starts to slow, rather then having to shake or swirl the bucket, I take the paint stick (magnet side down) and hold it too the side of the bucket moving it until I find the stir bar, then keep moving the stick along the side agitating the yeast that is on the bottom. I normally keep my fermenting bucket in a 60qt IceCube cooler filled with water to control my fermenting temperature, so it's real easy to get the yeast into suspension with the paint stick with glued magnet and stir-bar.
tom