One thing which everyone seems to be missing is that practically all small aircraft (excluding types designed primarily for aerobatics) do have an AoA indicator. It's pretty binary in nature - "too much Pitch" vs "you're OK". It's called the stall warning horn. There's no reason I can think of, other than the last second of a landing, why you should be flying in the "not OK" region, i.e. with the stall horn sounding. (There are flight training reasons but you're deliberately flying close to the edge of a stall).
So for non-aerobatic purposes, you have a perfectly fine AoA indicator. If the stall horns sounds, push. If you're making normal flight regime gentle inputs, there's plenty of margin between the warning (about 10-20% above the current stall speed generally) to relax the pull before anything bad happens.
Aerobatics are a different case. I agree with whoever said that if your head is inside the cockpit looking at gauges while you're doing something tricky, you're already in deep do-do. You just have to have the feel of the aircraft. At altitude, if it snaps, well you'll know where it happened for next time. At low altitude... you'd better know the aircraft well enough that it doesn't happen.