The best replacement for jet ski is waverunner.

The best alternatives to jet ski are rated as following:
★★★★★  waverunner
★★★★  boat
★★  sea doo
★★  atv
★★  seadoo
★  snowmobile
★  superjet
★  sit down
★  water ski
★  dirt bike
★  kawasaki
  jet boat
  jet ski
  yamaha waverunner
  wave runner
  jetski
  wet bike
  4 stroke
  wave runners
  speed boat
  four wheeler

Your alternative for jet ski is not listed? Suggest!
Speaking about jet ski, one probably shouldn't forget about boat.

Other search terms related to jet ski and their ratings are:
★★★★★ boat
★ jet pack
You have in mind a companion for jet ski and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of jet ski in all years. Click on graph for more.
jet ski
waverunner
boat