Back in 1991 wasn't the USPPA big? I remember people always talking about their "speed" back in the day. It was understood that if you are over 100 you're not to be played with (not by me...). I personally LOVED USPPA tournaments and found that handicapping system to be the best, but haven't seen it in use in a long time.
Guess it is where you hang out at , 89 or 90 was the first i heard of league pool , a poker playing buddies wife played in a league , he told me i should check it out . I played at a couple of Clicks pool rooms and CJ's in Dallas and occasionally a bar. They had about 14 7 foot bar tables there and i never saw a league pool game in there and i was there about 4 nights a week for a year or so .
Maybe league pool was bigger in some parts of the country than others .