Your question has been answered:
https://frc-qa.firstinspires.org/qa/155
Most notably, no mention of taking Fouls for strategic purposes. In general I would expect as part of the rule "if repeated or strategic, tech foul" or something of the like. Typically repeatedly taking Fouls as part of your strategy isn't encouraged like this....
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2016
| Innovation In Controls, Industrial Design, Quality Award, NC District - 4th Seed