My 2 cents (or less) worth. We run well below the C rating of our packs, and we use fairly low C rated packs. We run in the 20 amp range (in the 8C range) average and brief 40+ amp peak. A 2800 amp pack at 25C in theory can put out 2.8 x 25 mah or about 70 amps. Many of our packs are 25C so easily capable. Many RC applications use much larger capacity much higher C rating for their needs. They have more reason to try to verify the high C ratings. Packs might also puff if drawn too low, or as they get old and lose some C rating and or capacity. You could probably see that coming with repeated tests with the meter, but if you watch temperature, % remaining after flight, and cycles on the pack you will have a pretty good idea without the meter.