[Lil' Lavery]

As mentioned earlier, the only spoiler that made it onto the rack at VCU was under identical situations as Stl, thrown by an HP onto an empty leg.
During QF 3.3, 435 attempted to place a spoiler in the middle of the #2 alliances row of 5 (also, where it intersected a column of 2) on the far side of the rack, potentially turning a 40 point formation (row of 5, and 2 columns of 2) into 14. Unfortunately, it was not successfully placed, and time didn't really allow for another attempt (although, in hindsight, another attempt should have occurred anyway), as 435 needed the time to get back on 1885's ramps. The game ended 100-62 (72 before penalties). If the spoiler had been placed and no penalty given to the #7 alliance it would have been 76-72, not swaying the outcome of the match, but making it much closer.
There were very few other attempts for spoilers to be placed.
Because of the lack of consistent multi-tube treats during week one (~3-4 per regional), spoilers often would be worth less to most alliances then either a ramp bonus or extended an existing row. Additionally, the black spoilers set off even more defensive flags than a ringer, and in order to negate existing ringers, must be played closer to the end game (often in it), when a majority of victories happened through the bonus points. Beyond that, when a team saw a large row forming, they would often play a ringer to stop that row from expanding further, not only hampering an opposing score, but enlarging theirs.
Spoilers will likely not emerge as a serious strategic option in a vast majority of matched, particularly in the qualification rounds. At some of the more competitive regionals we will see a few played during the eliminations, particularly when a higher-scoring alliance meets an alliance with lesser scoring capability (but still enough to play a spoiler). At the championship, particularly in the elimination rounds, spoilers may quickly become a factor, and a strategic advantage to teams with less scoring capability than the opposing alliance.