Why don't you simply talk to them to see what's going on? Ask where they're taking them without giving them a leading question. Be a good neighbor.

I figured if they were poachers, they would have a good response ready for any nosey Gringo. And I didn't want to drag my wife out of bed. (she is the much better Spanish speaker)

After there was a bit more light, and I saw them again, I'm pretty sure it was one of the guys from Roberto's in Troncones.

Four sets of turtle tracks just in front of my house, three more I can see easily and the sun is not up yet.
People are on the beach right now cleaning out every nest. I'm telling myself they are taking the eggs to the hatchery.

Why don't you simply talk to them to see what's going on? Ask where they're taking them without giving them a leading question. Be a good neighbor.