The best replacement for flasher is dodger.

The best alternatives to flasher are rated as following:
★★★★★  dodger
★★★★  underwater camera
★★★  fish finder
★★  oak grove
★★  fishfinder
★★  camera ice fishing
★  showdown
★  finder
★  vexilar
★  cobra ode
★  progskeet

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

Other search terms related to flasher and their ratings are:
★★★★★ sounder
★★★★ e3 card reader
You have in mind a companion for flasher and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of flasher in all years. Click on graph for more.
flasher
dodger
underwater camera