Not only that, but that wouldn't eliminate pronounciation issues. I remember once a puzzle was "Raindrops Keep Fallin' on My Head" and a contestant was ruled incorrect when they added the G.
The real solution is pretty easy: Don't use any puzzle on your show that offers a reasonable chance of setting up a situation like this,
Are you proposing that they don't use puzzles that end in I-N-apostrophe, or that they eliminate all puzzles with gerunds? Because if it's the latter, it seems like nearly every time the category is Event, the puzzle contains an "-ing" word, yet this is the first time I've heard of where a contestant lost money because they left off the G.
"Hickory-smoke" is actually the more-discussable story, but since viewers don't watch the show that closely, that slips by. They only notice "swimmin'" because the show had to do the right thing and point out the error (even the contestant realized what had happened as soon as the buzzer sounded).