I used to spend a lot of time working on my skis, but then I got lazy (too tired after skiing then going to work), and I discovered, that unless you are looking to shave hundredths off your race times, there isn't any practical reason to spend much time waxing and fretting about maintaining immaculate bases.
I skied most of last season on unwaxed skis, and I rarely felt that wax was lacking. I think the half hour of sleep I gain does more for my skiing than waxing scraping and brushing.
I think ski tuning is, for most, a hobby they indulge in when they can't be on the slopes. I know, among the fastidious epic ski tuners, this is a heresy!
....so I thought maybe some bold type would help you a bit.