I have Boamasters with RHP's to maintain the minimum ambient temperature. The belly heat/hot spot problem is similar as heat tape under the enclosure simply won't work as the melamine floor is too dense. I use these mats for creating a hot spot/belly heat: http://www.bigappleherp.com/Intellit...=2&category=14. As an FYI I ran it unregulated for a few days outside of the enclosure to see just how hot it would get, it topped at 130*F so it definitely needs to be regulated. I have the mats and the RHP's on their own t-stats.