Calendar the cancel before the signup
Set the reminder for day minus-2, titled with the price it becomes. Then enjoy the trial guilt-free.
Use virtual or locked cards
Bank virtual-card numbers can be paused after signup — trials that can't bill can't trap.
Know the FTC's 'click to cancel' direction
US regulators have moved toward cancel-as-easily-as-signup rules; if a cancellation is being made hard, complain — it works.
Trial the annuals in monthly mode
Test any service at monthly pricing; only survivors of 90 days earn the discounted annual plan.