Yes, if it's in your heart offer your help.
As Okuma stated, it really does come down to his comfort with you. Please don’t take it as a slight if he says no. It’s a really tough thing for some of us, to hand over the keys to anyone else.
Many years ago a fly shop owner that was in the area had an accident and ended up in traction for an extended period of time. I ran his one man shop fulltime ( banking, A/P, ordering, booking travel and guides, etc, etc.) until he could return, without compensation.
We’d known each for years and even though I was with another fly shop at the time, there was a trust and confidence factor at work. It’s also a testament to the way small business owners would help each other out. I had to be away from my position during his recovery, which required the cooperation of my current shops partners.
The comical side of it was, a few of the customers that came in while I was behind his
counter, nearly soiled themselves. They were the guys who’d hang out around my current shop and would, on occasion, go on and on, about how they’d never walk into that shop.
Sometimes I hit post, before finishing a thought...
Which brings us to another possibility. Might there be another shop in the area that could lend it’s help ( experienced retail staff ) to keep his operation running. If that fails, you might suggest
contacting his product reps ( through the various lines he carries - Call Scott, Sage, Umpqua, etc. ) for help or suggestions. Directly after a large natural disaster, our reps called in to check on us and some showed up ready to chip in, almost before any of the first responders to the area did.
Even if the reps themselves can’t be there, they often know of retired or part time experienced fly shop staffers in their sales area, that might be available.