we just turn off the water to the outside and haven’t had any issues with a burst pipe since doing so, thank the Lord!
I put those thick foam coats on the outside faucets in winter, to keep them unfrozen, too.
I’m trying to figure out why you guys are supposed to turn off water while we drip ours here-they even remind us on the local weather forecasts to drip at least one faucet when it freezes. Most water pipes are in concrete slab foundations here-even pier and beam ones have dense urethane blown and packed a foot or so around everything under the sub-floor, then sealed on the outside with housewrap-maybe that is the difference?