• Keep an arsenal of scientistic buzzwords at the tip of your tongue. So armed, you can effortlessly explain away even the most firmly acknowledged mysteries with a few impressive phrases and a wave of your hand. For example, the undeniable but incomprehensible facts of animal migration may be definitively ascribed to a "biological spatio-temporal vector-navigation program." Likewise, you may call upon such quasi-substantial conceptual conveniences as "biological clock," "self-organization" and "cellular memory" to deflate any suggestion that orthodox science may lack satisfactory explanations for intractably puzzling phenomena.
• Establish a crusading "Scientific Truth Foundation" staffed and funded by a hive of fawning acolytes. Then purport to offer a million-dollar reward to anyone who can repeatably demonstrate a paranormal phenomenon. Set the bar for paranormality nowhere in particular. Set the bar for repeatability at a "generous" 98%, safely ensuring that even normal scientific studies that demand a mere preponderance of evidence, or average results above chance, would fail to qualify for the prize. Should someone actually meet or exceed your criteria you can effortlessly dismiss their claim by pointing out that they’d just proven the phenomenon to be perfectly normal.