For "marginal" hail events, pattern relationships among polarimetric variables should provide improved hail detection. In hail shafts a negative correlation arises between reflectivity and differential reflectivity that is independent of the drop size distribution (DSD). Linear depolarization ratio and correlation coefficient measurements respond weakly to DSD variations, but they are particularly sensitive to large frozen hydrometeors that are wetted and have irregular shapes. The correlation coefficient can fall from 0.99 to less than 0.95 in hail shafts. Correlations below 0.8 have been observed with extreme events. Depending on antenna isolation, LDR measurements often increase by 5 dB or more. Also, for rain there is a consistency among ZH, ZDR, and ΦDP. Inconsistencies within thunderstorms are indicative of frozen hydrometeors. The relative advantages and disadvantages of these alternative hail detection methods will be examined.