What is the length of a jet boat?
Jet boats fall within the usual range of recreational boats. They’re no more or less affordable than a bowrider runabout in the same size range, about 15- to 28-feet long.
How tall is a jet ski on a trailer?
Take the watercraft model specified height and add at least 20 inches. This would be the absolute minimum total height of the watercraft sitting on a trailer. The STX15F spec is 41.3″ height, so on a double trailer it would be at least 62 inches overall from ground to top of steering.