2 weeks ago at Deep Creek lake we saw 2 rental boats , a pontoon and a run about,{ same family } arrive at the condo docks. The pontoon hit the dock and when a girl went to help, she fell in the lake. Later that day, when trying to dock the pontoon, again ,a girl grabbed a mooring line from the pontoon to assist docking. The operator reversed the pontoon as he was coming into the slip, the girl holding the line was pulled off her feet and almost dragged into the lake. Later the runabout approached the dock at full speed, came off plane approximately 20 feet from the dock and entered the slip sideways. Lucky for him he hit the dock hard enough to stop the boat. But there's more, I was backing my new Benny out of my slip, a fishing charter was directly off my stern about 50 feet out. I made verbal contact with the operator about my intentions. Everything was good . As I was backing out of the slip, the previously mentioned runabout operator rounded the dock, full throttle with the bow up in the air and came between the fishing charter and me, throwing a huge wake in my direction. I thought I was going to be thrown into the dock, but I accelerated through the wake in reverse. After everyone was done yelling at this idiot, his response was " It was my first time on this boat and the throttle stuck! " Closest I ever came to an accident since I have been boating. Damn rental boats!