Zip ties in the slots over your ears. I used this style of hard hat when I was doing industrial installs. Two little zip ties in each slot, and a pair of minimags. You might be able to do the same with yours, but with the strap through the loops rather than the lights I use.

I'm claustraphobic. :P
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-IronRaven

When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.