Approaches (I'm not saying whether they work or not, just saying that I've seen various libertarians hold these up as viable approaches):
- Unbanking/underbanking
- Using gold/Bitcoin
- Using hard encryption
- Going gray/black market
- 'Going invisible'
- Entrepreneurism
- Making a successful 'State insurance' company like Hoppe suggested
- Primal/GTFO of the medical system.
- Tax evasion
- Offgridding
- Seasteading
- Not talking to the police
- Legal activism (EFF/ACLU/etc.)
- State activism (TAC/Texas Gold Bank/etc.)
- Basic advocacy/protesting/outreach
IMO, that last one gets overlooked a lot more than I think it should. It sounds the lamest, but it's probably the most important.