Connect the blue trailer to a truck and back it up to the uhaul. Then get you some pipes to stick under the smoker. Use a comealong fron the trailer to the smoker and suck it out. If Height is a problem then use a couple 2x12's for ramps. 3/4" PVC might be enough to allow the pit to slide on. Steel fence pipe would be best.
What part of Texas are you moving to?
NB Bandera, Stnls Brinkmann, Classic Old Smokey (with a rusted out bottom),