An Overland Park, Kansas man suffered serious injuries and was flown by Staff For Life to University Hospital following a flyboard incident Sunday evening at the 10.6-mile marker of Crane Cove.

An Overland Park, Kansas man suffered serious injuries and was flown by Staff For Life to University Hospital following a flyboard incident Sunday evening at the 10.6-mile marker of Crane Cove, according to a Missouri State Highway Patrol Water Patrol division boating incident report. 

A flyboard rider stands on a board which is connected to a long, flexible hose being towed by a watercraft. Water is forced under pressure to a pair of attached boots through jet nozzles propelling riders to heights up to over 40 feet high and also underwater to up to eight feet deep. 

Brian M. Effertz, 46, was steering a Zapata Flyboard being towed by a 2009 Seadoo PWC and 45-year-old Tracey S. Hoffman of Leawood, Kansas at approximately 5:50 p.m. on Sunday, July 2, 2017 when the incident occurred. Hoffman was uninjured. 

"AS OPERATOR 1 WAS CONTROLLING THE THROTTLE, OPERATOR 2 LOST HIS BALANCE AND FELL ON TOP OF VESSEL 1 FROM A HEIGHT OF 10-12 FEET IMPACTING VESSEL 1," the incident report stated. 

Both involved were listed as wearing safety devices. There was minor damage to the PWC.