I would like to do a cluster assignment. The amount of units within each cluster varry. In the baseline data here is hardly any correlation of variables (including the DV) within clusters to be found. So for the final analysis I will probably be able to ignore clusters. Clusters are only necessary out of practical reasons to distribute the intervention.
I would therefore like to have an equal amount of units (at least as much as possible) within each condition. How can I do a complete random assignment at the unit level. As far as I understand it cluster_ra() can only do so at the cluster level.