harper.surf's rivals
Provides free global surf forecasts for twenty-five countries, updated every six hours.
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ariasurf.comhas an owner
Hour-by-hour wave, swell, wind and tide forecasts for over 50,000 global surf spots, including live webcams.
How rivals are picked
Every square's description is compared with every other square's, and the closest thirty are read by an AI that keeps only real alternatives: products a customer would weigh against harper.surf. Add-ons, companion apps and neighbouring niches are left out. It reads what each site says about itself, so it can be wrong; tell us when it is.
Bulldozing costs what evicting costs: double what the owner paid, $1 minimum. It's anonymous, nobody moves in, and the lot reopens at $1, so they can come back. The longer version is evict your competitor.