I am a new BP owner myself, but I have been doing research for a while now, and here are a few suggestions on heating IMO.

1) An UTH with a thermostat is the best heat source as you can directly control the temps and BPs need the UNDER BELLY heat to help with digestion.

2) If you use a ceramic heat emitter or heat bulb, keep in mind to monitor the temps INSIDE of the hide, as a light shining down on the top of the hide will heat up the inside to much different temps than what is either outside or under it.

3) If you are using an espceially non-conductive substrate with a thermostat-regulated UTH, using a low wattage light bulb set to a few on/off cycles over the hot side will help control your ambient temps (both inside and outside hides), regulate the humidity better than just the light, and help the day/night light cycle if your tank is backed and does not have good ambient lighting in the room. My 40W bulb is even plugged into a rheostat to ensure nothing overheats.

4) If you continue to have humidity issues with the cypress, you can place some lightly damp sphagnum moss in a hide or scattered throughout the substrate to keep humidity up. Just make sure that it does not remain damp at all times, as it can cause blisters and RIs.

Hope this helps some!