There is no limit to the number of Participation Clusters you can run on Bison Trails. As long as you have the minimum stake necessary to run a node on your desired protocol, you can spin up a new cluster. This minimum stake is required in order for your node to be in the active validating set. If you don’t have enough stake to meet the minimum requirements, you can delegate to Bison Trails’ nodes in order to participate in the protocol and earn rewards until you are ready to run your own Participation Cluster.