Art, the owner arrived at a launch site yelling obscenities in front of children, grabbed a kayak from my group (we had rented elsewhere), picked it up and threw it. Grabbed the ore and threw that, hitting a women in my group, and proceeded to then grab a cooler to throw that before he was stopped. Police need to be called, and from what I'm told this isn't an uncommon thing with him. Wouldn't recommend dealing with him or his company because of his violent display to which we are still unsure as to what if anything actually lead to his outburst.