Redpb

I understand this is about as hard as you get these days.

I've dealt with EHS since, about, post high school or 20 years now. While most of the time I can discern whether the sound is coming from an external or internal source it does still catch me off guard sometimes. For the longest time I thought this was a thing where I was just a little bit crazy until stumbling upon this 'diagnosis' about 5 years ago.
I get 1 of 2 sounds. The more common one is the loud bang, kind of like something crashing. The other sound is someone screaming my name. Like trying to get my attention.
On to my question... while most of the time I get an increase of EHS events when I'm exhausted have you come across other triggers that people may have?

Who wants a mustache ride?

When you first start I see the driver scrape about ten feet of ice, lift up the thing in the back, you look at the ice, sometimes make an adjustment, and then start resurfacing the ice.
What are you looking for in that scrape?