I don't cool, but I have a MAGICAL breeding room based on my season this year. I feel temps (high and low) are important. I did not drop mine much -- 82-85 day/77-80 night. Belly heat is set at 88 24/7. HUMIDITY IS MY SECRET WEAPON!!!! MY ROOM IS A RAIN FOREST!!!! 60-65/Day and 68-75 night.
I hope to avoid the sophomore jinx this coming season. Good luck all!
I'm in the same boat as Bill. I don't cool my guys and gals either. The only thing I do is raise the humidity in my breeding racks around this time and that seems to get them going. My males are always horny so there's not much I need to do to get them in the mood.