[paulryanrogers]

I've heard one is supposed to use the palm to press Ctrl and not pinky. Though IME the palm is awkward and difficult to use precisely. Maybe it gets better with practice.

Swapping control and caps is another alternative, though in that case it's still using the pinky.

[escape_goat]

I believe that one of the original best practices of touch typing is to use the opposite hand to press any modifier key. This allows one to shift the hand so that the strain through the digit does not lead to an eventual injury. Given the number of strain complaints people that revolve around command key combinations, it would seem to be right up there with keeping your wrists floated in terms of injury prevention.