there was a huge thread and variations of this across the street, i'll see what i can dig up. i remember it was a crazy good 3pt chase system per day that started off like 30-0 and then trailed off
I believe there was a system last year where you bet on the highest first inning line in each physical time slot throughout the day (so 1:05, 1:35, 3:35, etc.).
I can't remember 100% if it was YES to score or NO to score (I think YES)... but I do recall that it was quite profitable toward the end of the year when it was running.
Not sure if this is what you were thinking about...