I did my trade qualifications but never worked in the industry. I'm a stay at home pensioner (course was done to keep brain active).
Every time I pull either an arc welder or my MIG welder out I spend more time grinding crappy welds (gassless MIG, ughhhh) than I do welding. I get it back after a while and last job I did I don't remember having to grind one bad weld out (it's amazing what paint will hide, lol).
No, last arc welding I did I had a great day and every weld was text book perfect. Now I want to know what went wrong, I don't do that (not very often anyway).
I do find after 30 minutes or so my welds improve. I just don't do enough to keep my skill levels where I'd like them.
Now I tend to grab some scrap, warm up the habits (coffee and cigarette) and drag around on the scrap till I feel I can safely do the job I want to do.
I built an engine crane out of scrap steel when I had to lift my 6 cylinder (4.0 litre) engine out of my car to rebuild it. It worked like a charm.