Watching the WMUR news tv, and reading the NH State Police report ...
http://www.nhsp.dos.nh.gov/news-and-...-crescent-lake .... it seems that the jetski with the deceased 16-year old boy was following another jetski driven by a teen age male when the jetski in front slowed down and the following jetski drove into the lead jetski.
"one of the jetskis appeared to have serious damage .... the handle bars had come off, the padding had come off ..... totally ran over"
No mention on how fast the two jetskis were going at the time of this 2nd jetski crash from behind into the 1st leading jetski? A jetski is maybe capable to go 50-mph or faster, and jetski drivers are required to wear a pfd, and will have a kill switch lanyard that may be attached to wrist.