I just have a hose hanging over the edge...I think you're right because after draining the tun there was large circular depression in the middle of the grains. I'm guessing some kind of recirculating nozzle that gives a more even distribution of recirculated wort is where I want to focus.
Most of my brewing for the past couple of years has been single infusion mashing with batch sparging. Using recipes and Beersmith I rarely had difficulty hitting all of my numbers (pre boil volume, pre boil gravity, volume losses from deads pace and boil, etc...).
This winter I built a three...