I know of the left-margin click method, but it's actually slower than triple-clicking when I'm coding, because I have to move the pointer away from the actual code to the left margin (but avoiding the leftmost strip, which is for breakpoints).
Triple-clicking can be done anywhere on the line, so it's faster. That's why so many text editors support it.
Only worth considering if it's easy to implement, but quite handy for those us coming from other IDEs.
Cheers!