I thought all the homes in TV were built with ridge vents. My CYV has them, I think that's really all you need. If you want more air, crack open the attic access steps in your garage. I use to do that, then I realized two things. The fire block to the house from garage is gone. Also termites don't live above 120 degrees, so those wooden trusses are about the only worry I have in a masonry home, so i don't mind a hot attic. My electric bill is never more than $85 with SECO anyway.