In a grammar test I did, the following sentence was to be corrected:
"I first spotted the turtle playing tag in the yard."
It clearly contains a misplaced modifier. The correction suggested was to place the participial phrase at the beginning of the sentence ("Playing tag in the yard, I first spotted the turtle"). Could you, instead, place a comma after turtle?
"I first spotted the turtle, playing tag in the yard."
Based on what I've read about the placement of participial phrases, there's nothing wrong with it, but it looks and sounds strange to me. "I first spotted the turtle while I was playing tag in the yard" seems preferable to me.