Congrats on the bull and the great adventure.
For those who are asking about travelling with the meat, we brought two moose home this past week from SE British Columbia with no problems. One was cut/wrapped/frozen and filled up ~ 1 1/3 150 quart coolers. The meat stayed completely frozen for the ~30 hour trip home. My buddy's bull was shot in the morning, hung overnight to cool (it got below freezing that night), boned out in the AM, meat loaded into a cooler, and the meat was still cold when we got it to the bucther ~36 hours later. I did the same with the previous bull I killed as well with no issues. We didn't use any ice, just the temperature of the meat and the insulation from the coolers.