Surveying Heating Methods

So, just wanted to make a post going over the broad categories of heating methods reported around the site. Ordered vaguely based on my understanding of effectiveness.

1. Radio. While apparently the most effective, seems to be cost, regulation, and research prohibitive.

2. Ultrasound. Seems to be somewhat cost and regulation prohibitive, but there are rules of thumb on this site for effective machines and use.

3. Infrared. Seems to be readily available, but difficult to sift through the garbage products. Additionally, there seems to be contention about reaching the goldilocks zone of 40-43C internal temps.

4. Conductive (heating pad, sauna, etc.). Just the bare minimum.

Is there any I missed? Has anyone attempted RF?

Particularly interested if anyone has a folder of IR research, or on hands free US applications.

I hate to admit this, but while I find the ultrasound stuff to be very interesting, I haven’t bought into it because it looks tedious and I get bored easily. I just turn the electric pump on, or rig the vacuum hanger or extender, and I can do something else while being stretched. US requires constant involvement to keep the transducer in motion. Jelqing also requires constant attention.

[sigh] "I want my instant gratification, and I want it right now!"