I have 13 extract brews under my belt and have tinkered with the best way to chill my wort. I began with adding bagged ice to my partial boil to bring up the volume and bring down the temp. I found my beer had much more character when I used a full boil and yet cooling down the wort has become a time drag. I used a cooper immersion chiller and found it only gets the wort to about 90 degrees before it becomes a case of diminishing returns. The last batch I attempted to reverse the flow through the chiller with the chiller in an ice water bath and the wort running through the chiller using a low volume transfer pump. The concept worked out great on reducing the temp but the unforeseen result was the foam that came out of the pump. I ended up with more foam that wort in a 10 gallon fermentor. Are there any tricks out there in this area?