I launched a $1,000 affiliate challenge for my AI platform. Here's the structure

I run Hunch (https://hunchbank.com), an AI platform for competitive research. We launched an affiliate program a few months ago, and it was ticking along, but affiliates need motivation beyond "here's your 30% recurring."
So I designed a Speed Run challenge: 1 month, $1,000 prize pool, 5 categories.
The structure:

• Top referrer ($300) —> most conversions
• Top revenue ($250) —> highest commission earned
• Fast starter ($150) — >first to 3 conversions
• Momentum bonus ($100) —> highest 7-day streak
• Random drawing ($200) —> any affiliate with ≥5 conversions gets entered. Keeps it interesting even if you're not #1.
  The announcement email went to all active affiliates. We required zero opt-in; every existing affiliate was auto-enrolled with an opt-out option.

What surprised me: designing a ranking system on top of raw referrals was harder than expected. Had to build daily snapshot tables, leaderboard recalcs, and prize distribution logic, all in Cloudflare Workers + D1.
If anyone here runs an affiliate program, curious: what challenge formats or incentives have worked for you? I'm already thinking about Speed Run #2 and want to iterate.