Every 4 hours? Wow!! Incredible!
I really think that feature is neccesary, but looking at your darwins every 4 hours? I have always thought that investing in darwins should be buy & hold, obviously looking at it some time, and sure with a stop loss far away (lets say at least 10%).
If you are looking at your darwins every 4h, you are trying to be a trader of darwins, which doesn't make any sense since technical analysis, valuation, or movement because of demand / offer doesn't apply here.
Sincerely, agreing with you about the need of this feature (stop & take profit), I really think you are note having a good approach on darwin's investing.