i did not say that i had not met people who talk about success with their own indicators - just that i never met a professional trader who needs or wants anything special like that - but if it works for - good on ya
but are u talking about coming up with special indicators or just using your own system to access and analyse data and automatically issue your open and close orders? - that for sure does work!
IB have socket connections, api and dde for getting data but its only real time sort of direct from exchnges so no historic data, so u miss a tick and its gone forever, and its sampled to cut down a bandwidth, so u dont get it all ( i am not technical except to the level i need to trade)
i guess u might have CQG if u have a satelite feed and they use dde - dont u just love latency? or is it another data supplier