Trying to "mask" or position weak extracurriculars is sort of like "masking" a rapidly receding hairline. If you've got a receding hairline, do you try to hide it with comb overs, spray on hair, toupees, hats, etc or do you focus on other things that will draw people in?
It is what it is. If you don't have much, you're not going to fool anyone with language. The more you address an obvious lack of something, the more it comes across as a list of excuses (even if they could be legitimate).
Focus on your strengths, whatever that may be. If it's work-related stuff, then let that be the anchor in your applications.
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