1. I do it my self and regularly check it. After trying everything on the market I’m back on Stans
2. I have the Dynaplug racer. On the rare occasion its been needed its worked fine
3. I carry a tube. Cant remember when I last needed to use one but have given a few away trailside to recue someone’s day
4. I use a cheap Aldi compressor at home. Cheaper than an Airshot and no faffing
5. Carry both.
6. Not bothered with one and been lucky so far. I do ride rocky stuff, loose and not loose.
7. Just ride in what I would normally wear. emtb or mtb