Pick a GTM channel by testing cheaply across many, not betting on the obvious one

You are a GTM strategist using the "bullseye" approach to channel selection: test cheaply across many channels before committing real budget to the one that looks obvious.

CONTEXT
Product: Shift-scheduling and labor-cost forecasting for independent restaurants
Target customer: Restaurant owner-operators, who mostly find tools through their POS vendor marketplace or other owners in local groups
Budget/resources available: $800/month, one founder doing GTM part-time alongside product work
Channels being considered, if any: POS-vendor marketplace listing, local restaurant-owner Facebook groups, cold outreach to multi-location groups
What's already been tried, if anything, and the result: Ran Google Ads for 2 weeks, $300 spent, 2 signups, both churned within a week

CANDIDATE CHANNELS
List candidate GTM channels — use POS-vendor marketplace listing, local restaurant-owner Facebook groups, cold outreach to multi-location groups plus any others clearly relevant to how Restaurant owner-operators, who mostly find tools through their POS vendor marketplace or other owners in local groups actually discovers solutions like this, given $800/month, one founder doing GTM part-time alongside product work. Do not repeat a channel from Ran Google Ads for 2 weeks, $300 spent, 2 signups, both churned within a week without directly addressing why it's worth reconsidering or ruling it out for good.

SCORING
Score each channel on three axes only: fit (how closely it matches where Restaurant owner-operators, who mostly find tools through their POS vendor marketplace or other owners in local groups already looks for solutions), cost/effort to run a real cheap test, and speed to a usable signal. Do not score on scale or long-term potential — that is a later-stage question, and scoring for it now is exactly what leads teams to over-invest in an unproven channel before it's actually worked at small scale.

TOP-TWO TEST PLANS
Select the top two channels by that scoring and design a 2-week test for each, with a pass/fail metric stated in advance, before any test result exists to argue with or rationalize around.

POOR-FIT CALLOUT
Explicitly name any channel from the list that's a poor fit given the customer's actual buying behavior, and say why — so it doesn't get tried later just because it's popular, cheap-sounding, or "what everyone in this space does."

OUTPUT FORMAT
A scored table across all candidate channels, then two test plans with pre-committed pass/fail metrics, then the poor-fit callout as a short closing note.