Keeping the Hoop Houses Cool

It is going to be unseasonably warm in Colorado today.  The forecast is for a high of 85 degrees.  Even with the hoop houses fully opened up it will easily get to 90+ degrees inside the hoop house.  To help reduce the temperatures and to help the plants adjust to full sun for 12 hours a day I've put white sheets over each hoop house.  This should bring the sun intensity down and reduce the temperatures some in the hoop houses.