Re: Relieving the heat- is it make sense?
Wow rand, you've got a square meter of shade over the hive and it isn't good enough? That seems like it would cover the sides pretty good for the hottest time of the day. I was planning on just extending my shade frames about 5 inches/13cm on each side...I figured that would cover the hives during the hottest time of the day.
I understand about the sand...maybe build some baffles into the ventilation holes?
Sounds like the empty supers would be a good thing. Get them on there and you can still experiment with other ways.
Warning: Rookie beek...take my postings with that grain of salt you keep in your pocket.