Hi, Trout.
I may readily be an amateur. I used to trade the open quite frequently.
I have more than a score of "round trips" wherein I sold "out of the gate" at limit offer (or bought limit ask) and covered the other limit (eg: limit bid sold, limit offer covered). That was in bellies.
Feeders, selling a three day rally, frequently the high for several days was set on the open. The converse may be said for lows, on three to five day breaks
I may have been an amateur, but if your filled on a hunnert cars out of the gate .... and that was BY FAR the best opportunity of the day ...
I once got off fifty cars of Auggie bellies, sold limit bid ... they were lock limit down within less than seven minutes of the open ....
So, if that's being an amateur .... I'll be one ... 24/7.