I dunno about shenanigans or time consuming, I just craft some stuff, run a mission or two while they sell, alt tab to youtube, and alt tab back to fill up the AH slots.
1.09 bil inf on hand plus 2 ATO/ 2 winter sets in 3 days from AH, alt is only lvl28 from just soloing. SO drops are vendor trash, low level generic IOs are cheap and don't degrade, for fresh accounts, buying SOs and maintaining them is a trap.
You'd need experience and some luck to recognize what cheap recipes to buy, what IOs to sell, and when to buy converters in bulk, but even on my first character, it took about 3 weeks of solo play and AH to hit 1 bil inf with a full IO build. I'm faster now because I can seed my alt with starting fund to buy recipes, and know what to craft for quicker sales/better profits, but AH is still the cheapest and most effective way to generate inf, especially for a fresh account without extra help.
Not to say your effort at grinding is wasted, but if inf is your sole concern, why double the effort for half the return? There are literal step-by-step guides on using the AH, with specific instructions on what to buy, what to craft, how to convert, and when/how to sell. And you decide on how much time you invest on it. No one is stopping you from only crafting and selling 10 IOs per day, and even that would probably get you ready for your dream build quicker than grinding missions.