The best replacement for surfers is paparazzi.

The best alternatives to surfers are rated as following:
★★★★★  paparazzi
★★★★★  skaters
★★★  bodyboarders
★★★  bikers
★★  sup
★★  temple run
★  bickers
★  bikers game
★  temple run 2
  minion rush
  broadbeach
  bikers games
  agent dash

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

Other search terms related to surfers and their ratings are:
★★★★★ sharks
★★★★★ dolphins
★★★ sharks in waves
★ sharks in the waves
shark photos
You have in mind a companion for surfers and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of surfers in all years. Click on graph for more.
surfers
paparazzi
skaters