Turns out -3/+3 is a GREAT place on EW for signal on BNB/UST. Buy on -3, sell on +3 EW. These numbers aren't solid for every pair, however. I wouldn't use -3/+3 on just any pair. You have to look back and do some testing. BE PATIENT! This method can take awhile to generate a signal, but when you do it ROCKETS.