I keep a THICK ( thin towels dry out way to quick) wett towel on top of the tank,covering about 75% of it..I cover a majority of the rest with tin foil. I also keep a large water bowl!slightly off center towards the cool side of the basking bulb..I keep a fairly decent size of tup o ware filled with wett sphagnum moss on top the hide directly under the heat bulb...
I wet the rag fully every morning and night..I also mist every morning and night when I wett the rag..
during shed, I mist constantly through the day and keep that towel pretty much constantly wett...seems to work well.. But I am looking to switch over to a diff bedding. I been using aspen and switched one tank over to a coco husk moss blend,holds humidity way better.