30 years ago when I first wrote the game (can't believe it's been that long), I definitely remember debating with friends about the strategy of intentionally delaying completion of singleton rows, in order to score more points by completing several rows at once. But we pretty quickly reached the conclusion that it was a poor strategy, because the benefit of extra points was outweighed by the risk of landing in a hopeless situation and losing the game sooner than normal. We abandoned that idea and focused on simply trying to survive for as many rows as possible.
But I have to rethink this now, in light of
@3lectr1cPPC's games and my own tests. I've been so busy I only had a chance to try one game, and it wasn't even an especially successful game, but I averaged 167 points per row instead of my typical 135-140 points/row and previous best of 145 points/row.
I could imagine a strategy where you farm multi-row setups until level 9 or so in order to maximize points, then switch to a survival strategy. That might earn about 4000-5000 points more than otherwise.
I can tell you this definitely isn't the way Moose played the game. He would sit down and play seemingly forever, games would last half an hour or more. Nearly the whole game was spent at level 10.
Believe it or not, 30 years later I still sometimes get people emailing me to brag about their high scores. This requires some determination since my email address listed in the game's about box is long since deactivated. One person claimed a best of over 1000 rows, and all the entries on his high score list are at least 400 rows.