I think GreyBox (by looking at the demo) does not allow for trailing stops. You have to execute stop/loss yourself. PKJR
I have never used trailing stoplosses, and I don't think that Graybox allows them/ you would have to manually enter them all the way up following your trade. The way I scalp they were never an option.
UPDATE: After taking a couple months off from trading JNPR for the reasons above, this past week I have started trading it again to see if things have improved. I am happy to report that they have. I believe that the problems were due to everyone getting used to decimals. Large INCA posts don't have nearly the power they did a month ago. Back to scalping... ;-)