How to drag a 66lb dog?

[Jane, Rooney & Stuart]

O.K. I'm trying NOT to drag Stuart but in the past month he has started just flopping down like a rag doll when he doesn't want to walk.  This usually happens are we are approaching the Puppy Hauler but can happen at other times also, like yesterday when it was very hot and he was laying in the shade, I went to put him back into the airconditioned suv and he just goes limp, like jello limp, dead body limp.  I can't lift a 66lb dog up when he is acting like a limp muppet.  I've tried lifting up his back legs, front legs, around his middle, dragging him by his easy walk harness, sqeezing his back thigh but nothing works.  It doesn't help that bystanders are laughing and then pretty soon so am I and at this rate I better start wearing some Depends.  A shameful YouTube moment if there ever was one.  Any ideas on the why or the correction of this new behavior - short of a cattle prod - lol.

[Laurie, Wally & Charlotte]

Okay, here's an idea:  Keep a large towel in your puppy hauler.  When Stuart is refusing to budge, open up the towel and lay it down parallel to him, so that it touches the back length of his body.  Have him roll over, so that he is now on the towel.  Start dragging the towel.  The movement should surprise him and get him back up onto his feet.