So here's a scenario to get another clarification of how AGL would be defined.
I considered flying from here to the hill across the bay as pictured in this photo:
I am at a turnout on a coastal road so near sea level. The hill across the bay...
Ran into wind on the last 3 days of my trip to Greece. First was on the island of Santorini. I didn't attempt to fly because I had to contact the airport and coordinate with them anyways. If the conditions were better, I would have jumped...