It seems the trailing stop is not the sort I'm after. I would like something that works more like the function provided by TWS; my strategy would like to set both the stop value and the trailing value, not percentages. (On SetProfitTarget there is a bool to control this.) Also, there doesn't seem to be a way to set GTC. Setting barsValid might be the way to go, but how would that be set along with hard trailing stop values?
See also Yahoo group about applying RE.