poker, I don't think you got a real tour of the Spot Hug. You don't have tp push a button, it sends several types of alarms
automatically. You only push a button if you want to manually post a position or manually call for distress in addition to that.
You also don't seem to understand how alarm systems work. HUG is an alarm system and designed to report a stolen boat. Any alarm system that does not require it's own battery power, can be easily defeated by cutting the main power, throwing the battery switch, etc. And if your battery charger
manages to blow your main battery--which happens--then again any cheap alarm system that relies on the main battery, isn't going to work.
SPOT HUG may not be right for you, but whoever showed it to you definitely did not explain the product. You'd be better off looking at their online sales materials and manual.
Much of Sea Eagle's (not to be confused with a popular pvc dinghy
maker) online materials seems to be targeted at their inshore model, which does not use satellite communication and doesn't compete with Spot. They don't say much about their offshore model.