Those instructions are good, but if you don’t want to use a hair dryer, I used to just use a lighter and light it on fire. I also would light the polish in the can let it melt and then polish the boot with that to get a nice thick coat, but BE CAREFUL because once that stuffs on fire it can get outta hand. Keep an extra rag around to throw on it if need be and then just use the polish you sopped up on the rag on the boot.
Those instructions are really good though. The smaller the circles the better! It’ll take a few hours to get the first good coat, but over time it’ll be easier to maintain. Some people “cheat” and use Mop n Glo on their boots, but rest assured, the nice shininess is cool, but unfortunately it ruins the hell outta the boots.