I want to install a very thin berber carpet on a radiant heat floor
with a thin pad. I know already about the insulating issues with
carpet and am not concerned with that part.

My tubing runs very close to the walls and I don't want the carpet
installers to nail down the tack strips. I have read that some
basement floor carpet installers will sometimes glue the tack strips
to the concrete, can the same be done for tack strips on my plywood
subfloor?