So heightened activity means exactly squat in many cases.
Hmm...I sure hope you're willing to back that statement.
I've only heard too often, people advising newbies that an indicator to feed is when their snakes start roaming. I guess they're all wrong in saying so? Who's to say that your snakes weren't still hungry and looking for more food just after you've fed them. Or heck, they could just as well be looking for a place to go hide and digest their bellies. The heightened activity I'm refering to is days after they've fed and they start moving around more than just hugging the basking spot.