It's my understanding that Hanks are flat-magnets. Shame, b/c they look so hott. That's all internet-anecdotal stuff, though....a friend of mine just got a se of Hank; I'll wait n see how his fare.
I'm about to buy some 2.0" Kojaks for my next fast-ish 26" bike.
But, if you want a fast-rolling, long-wearing, flat-resisting, most-surfaces cruiser tire, get yerself a set of Fat Franks. Been running mine 4 seasons a year for over 3 years, skidding, romping, stomping, and generally carrying on. Love'm. (But I'm probably due for new ones; I'm trying to tough it out on them thru this winter....)