I vote Hand Crank. Easier to set up - takes less booth space but yet will attract lots of attention. Activity begets activity. Even other vendors in your booth can get people to drift your way. Are you alone or with somebody else? If accompanied they can peel off the buyers and do business while the lookers.....look.
My wife and I show sell every weekend (it seems...well...no...actually it is every weekend. Huh...maybe that's why I have no life?). Getting peoples attention can be a real trick. We actively engage people to get them to us. If we do nothing - so do they.
At the shows there's frequently a leather goods vendor. He sells belts, key fobs, custom holsters and so forth. His joint looks like a corral made out of well worn 2 x 2's. It's a walk in. He has a 4' bench toward the rear where he works when he's not selling. Just pounding punches and dies attracts people to him.
Your bags look great but I bet with all the labor they have to sell for quite a bit. Around here, though, with people all about re-useable grocery bags they'd sell if they weren't viewed as too expensive for daily use.