The most direct way available to modern day researchers to reconstruct individual and population level behavior is to analyze markers of activity from skeletal remains (Ruff et al., 2004). An analysis of the population at the Republic Groves site (8HR4) was conducted, using the entheseal change score system, the Coimbra method, developed by Henderson et al. (2015). This study examined the implication of analyzing a commingled and fragmentary population with this methodology. Reconstructing specific behavior cannot be done with this type of approach; however, entheseal changes can be compared to specific patterns of behavior for consistency. An atlatl was found with the human remains and thus provided a suggestion of behavior for comparison. Entheses were chosen in line with a throwing motion of the atlatl and focused exclusively on the humerus, radius, and ulna. The application of the Coimbra methodology to the Republic Groves population was successful, at least in part. Overall, there was low variability of results, mostly 0, some 1, and with very few high 2 scores. The entheseal changes from Republic Groves were consistent with the throwing of an atlatl; however, this does not mean that this is the only behavior that could have generated that kind of change.