<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Though open fire/coal pits were used, the meat was suspended well above the heat. I recall images of early Florida settlers being taught "BBQ" with the meat on a lattice of limbs about 4' above a pit of coals. Obviously, the temps at that level were below wood ignition levels. </div></BLOCKQUOTE>
What is key for me, is that their methods grew out of necessity. They were working with limited choices for fuel, and were probably trying to preserve meat, so slow roasting over wood was possibly not the best way but the only way.
Along these lines, all grain that was malted for beer making had to be dried over an open pit. This resulted in a ale that had a strong smoke flavor. Eventually, somebody figure out how to dry the malted barley in a kiln, eliminating the smoke, and it must have won everybody over because, today, all grain is kiln dried. Schwartzbeirs are still made now with smoked grains but they are brewed more as a curiosity.
I just feel that if you had a time machine and gave the "barbacoa" natives some technology (briquettes, foil, et-73...) they'd be the last to complain about losing some tradition. I'll bet they'd be sick of tasting wood smoke and would prefer the taste of pure meat.