RedactedNarrative: Vessel 1 and Vessel 2 were travelling together one behind the other through Lake Boeuf.  Vessel 1 stopped in a cove when Vessel 2,  which by all account was following too closely behind Vessel 1,failed to come to a stop in time to avoid colliding with Vessel 1. Vessel 1 and 2 were both tiller controlled "G-Devil" powered vessels.  Both operators were wearing ignition cut off switches at the time.  No injuries were sustained in this incident.  Neither drugs or alcohol are suspected in this incident.