Just a couple thoughts and questions...
3. The field party they were headed to was supposedly for J.B.'s birthday. I know they were "lost" but why would you not go to a party that was in honor of you? If someone is throwing you a party then you are pretty close with them. Would you not be familiar with the party location or at least make sure that you have exact directions written down? What are your theories on this? Did they have no intention of going? Were they truly lost? Were they out doing something they weren't supposed to be?
JB and Tracie had a short window of opportunity that night. They left Tracie's house in Dothan around 10:00 pm. Tracie's curfew was 11:30 pm and JB was spending the night, so they were supposed to be back at Tracie's house in Dothan no later than 11:30.
Knowing the information we have now, I believe they had more than just the field party on their list of things to do that night. It seems now, they definitely wanted to meet up with the 2 boys in Midland City and I think they knew about the field party in Skipperville, but weren't sure if they would make it or not.
The way field parties worked, if you were a City kid (meaning Dothan) your parents or relatives might own land outside of Dothan in the County or neighboring counties for hunting or a farming share. If you decided to have a party on the land either Friday or Saturday night, you would draw a map, get if photo copied and hand it out at school on Thursday or Friday. Typically the land would be way off any beaten path on dirt roads. I went to one in Geneva County (county to the west of Houston) when I was in HS, where the kid's father and Uncle owned the land, but the dirt road to get to it was owned by someone else. It was hard to find, because you thought you were driving on someone's driveway or farm. If you lived outside the city limits and lived on a big piece of land, you would have parties on your land. My experience was, most of us were not familiar with the locations of the field parties in my day in the '80's, especially if you lived in Dothan and the party was out in the county or another county. You had to rely on handwritten maps or word of mouth.
I'm not sure of the specifics of the Haleburg party. I know JB's Dance School Friend was a host and was throwing it partially for JB's birthday, but I don't know if the location of the party was where the Dance School Friend lived, or who's land it was that the party was on.
Someone on Thread #3 posted the hand drawn map/directions to the Haleburg field party, and I had a hard time pin pointing exactly where the party was and how to get there. It was very hard to follow the directions and didn't match up to roads and intersections (which might have changed by now) on Google. The party was indeed off a dirt road.
So yes, JB and Tracie did get lost trying to find this party and gave up and ended up at the gas station in Headland. And given how much time they had that night, I think they didn't want to waste any more time looking for it, because they wanted to try to meet up with the Midland City boys.