How do I get the coolside warmer?

dad's saying something about sealing holesa t the top and put them at the bottom for air circulation or something like that. >.> I don't know what he's going at, or whether it'd work or not. I have holes sealed up and a towel over the back of the tub. The temps are lower and the humidity is higher. IDK What to do... I don't really want to go buy another heat pad and t-stat(let alone I don't have enough for that...) I'm about ready to head to bed and IDK what to do for her heat. I don't want it too hot or too cold tonight like it was last night.... I can shut the vent in my room to make it warmer in there.... I don't know if we have any contact paper(I don't think we do) Could I put plastic wrap over all but three sides? I don't think I'll be here to get any replies tonight. I need to try to destress because I'm getting stressed by all of dad's suggestions IDK will work because he's not the most knowledgeable on BP husbandry. He thinks beause snakes live outside that 75 in't bad for them. I told him 75 isn't awful for them, but it's best around 78-85. IDK if he gets it or not, but that's what she needs. The towel on the back of the cage isn't helping, it just made humidity higher I think(It's reading HI now, no condensation.
Anyway, he's kicking me out of the living room now.

Ok here is something you might try. Oh your Dad is thinking right hole low and high do promote air flow.

Place the tub in a cardboard box on its side remove the blanket and use the human heating pad on the back of the cardboard box (you might need to tape it. Heat pads are a lot hotter than you are thinking! To be warm feeling it has to be over our body temps so high 90s. You need a few inches between the human pad and tub! The idea is the box will generate an airspace (a 2 inch flap on the front top might help too.) and the heating pad will warm the air in the space. (the box can be 10 or more inches bigger than the tub) The warmer air will be 5-8ºF warmer than ambient then add a couple of degrees to the primary heat and you should be ok. REMEMBER you will have to monitor very closely with the rheostat as it will spike!

This is something of a bandaid fix. You will need to come up with a long term solution. Tubs do not hold heat well at all and do much better in heated (80º) rooms. You may want to think of a snake specific designed enclosure (vision or boaphile) that will hold temps a bit better but even that may need a secondary heat as well. You could double up of the heaters but that will still leave you needing to address the ambient air temps. if it looses heat too fast.

Alright, thanks. That's a good idea and I almost forgot that what's warm to us is hot for the snake! Perhaps I could get a low-wattage CHE after I get my thermostat and hook the dimmer to the CHE. I could just put it on the lid?(I also already have a hood I can put it in) I doubt humidity will be that much of a problem.

And I am monitering the temps very closely. (The tub's on my computer desk so I can jsut look over to the side a bit and see the temps. When she's in my room at night, she's right where I can wake up and check her temps, which luckily were not too hot, but unfortunately too cold. :/ ) So yeah...