For me, Manuka Oil didn't work. Definitely the honey is the better way to go. It's expensive, but you only need to use a tiny bit on infected areas. One jar has lasted me over 6 months, and will probably last me 1 year more.
When my infection was at its worst, any heat made it flare up instantly. When I was in the shower, the sun, or cooking, I could feel it getting worse immediately.
I wear a hat. I don't know if it is good or bad, but it doesn't seem to make any difference now I have a shaved head.