I use the silicone pad pretty similarly to how I would coals or the heat gun. the advantage is mostly in labor saving. According to the thermostat on the device, which I wouldn’t trust at all, I use it at around 200-250 f.
I’ll tinker with the temperature and time as needed, this bow got around 220 on the dial for 45 minutes per limb, and I did that twice during tillering. Every 10 minutes or so I move the strip around. Any areas that scorch or are are going too fast get a scrap wood as a spacer to buffer the heat.
The one I’m using in the video is a briskheat 3”*24” which is sold as a metal pipe thawing tool, but it was recommended to me by a luthier. I don’t really recommend it though. I bought it refurbished for $25 on a sale but haven’t been able to find it again at that price. Now it’s often sold in the hundreds which seems ridiculous since it’s made pretty poorly. There are much more affordable options on ebay for guitar side bending strips. You’re not really supposed to use them directly on the wood but I’ve been getting better results with the off label method.