The best replacement for ski is snowboard.

The best alternatives to ski are rated as following:
★★★★★  snowboard
★★★  sky
★★  waverunner
★  snowboard pants
★  snowboard injuries
★  snowboard speed
★  board
★  snowboard socks
★  snowboard easier
★  sea doo
★  air chair
★  snowboard safer
★  snowboard beginner
  ski
  snowshoe
  ska
  snowboarding
  classic
  snowboard better
  snowboard easier to learn
  sit down
  not to ski
  cross country ski
  snowboard first time
  long ski
  boat
  wakeboard
  performance ski
  wave runner
  learning to snowboard

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

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



Google Trends

Scale is based on the average worldwide traffic of ski in all years. Click on graph for more.
ski
snowboard
sky