I cannot for the life of me remember where I read it, but I once read this blurb about a guy (pre-computers) that used to look at the tape, get into a position and literally use an hourglass of some size. When the hourglass ran out, he closed out- win, lose or draw. Apparently, he was quite successful at it. Not sure I would attempt such a thing personally. The blurb never went into detail about what he saw on the tape that made him enter a postion or how BIG or SMALL the hourglass was- which would make a large difference, no doubt
Sledge