I agree with Charm too. When there were like 20 trades since the latest range update, I used to keep the 10 last to make it more convenient when I was still admin and after when I could still update the range, and it worked pretty well afaik.
Suggestion B is interesting but we might lack a few trades to make a nice range if there are outliers. An extreme example of "trades outside of the range" is cracker... we've somewhat already used your idea Charm, but it's been hard at times.
03-Jul-2015 18:04:21