years ago (early 1980's) my mentor (Mark Fitzgerald-Rosewood Sound-Syracuse NY) used to do Sound reinforcement for several large Irish music festivals (e.g. Caeili Music festival-Philly PA). We were his pupils at SU and did a lot of work for him from 1981-1984; one of the festivals asked him to provide "better" reinforcement for the dancers/cloggers. He decided to go with the Crown PZMs and we would place them near the running lights at the stage lip.we tried facing them with different geometrical locations including upside down. Of course, upside down wasn't the greatest, but we tried it all. We had several dancers step on the mics accidentally and accept for the transient bump from the PA, the mics survived. Spilling Guiness Beer inside one may have damaged it, however, it still worked after we dried it out.
For the marhcing band, I would tend toward these PZM's on plexi-glass, maybe 4-6 of them on stands with maybe some shotguns stationed at mid field angled toward the 25 yard lines. I have seen Teevee productions where the band is in the stands and they have mics (I assume cards) aimed at the band usually 2-4 mics spread out in front. At SU, they used to mic us (I was in the marching band-not doing PA) with SM57s across the front row with an extra one or two closer to the woodwinds when we were in the stands. But of course, this was just for reinforcement not for recording.
Sorry to ramble, thought I was adding $.02 but it may read more like $.10!