Any heavy tow operators here? Questions...

Looking to change jobs and have a possible line on an old employer from way back in '93, Gene's Towing in Lakewood, WA.
I love where I'm at right now, but the nights are taking a big toll on me health-wise, so I'm looking to switch back to days. The hard part is finding something for close to what I'm earning now, days and local, that's not LTL (been there, done that). That and not knowing how badly a violation will affect me...

I still enjoy driving, and I'm fairly mechanically inclined. I think heavy tow operators would suit me just fine, as long as the owner is willing to look at me again.
I'm just wondering if there's any mandatory training involved (certifications?) Or if it's typically just on-the-job training?
There are aspects of the job that fascinate me, and I've subscribed to YouTuber Ron Pratt's channel (Midwest Truck Sales and Service).
What can you operators tell me that could be useful to me?

 

I'll work some nights, not consistently, I can live with that. He has several heavy operators, on a rotation. What's gotten to me is the night after night grind, with start times that vary from 5:00 pm to 9:30 pm. It can make for a very disrupted sleep pattern.

 

I worked for this company before, and that's how we were dispatched. Pagers. It was my first one, I thought it was the coolest thing back then.

 

Yeah, I'll have to see what they have to say. I'm not going to jump into it unless I can get guarantees in writing. That's one of the reasons I left after only four months back in '93. I worked seven days a week during those four months, with half of a Tuesday off (which I had to negotiate for). I heard awhile back that things are different now, with most of their drivers working shifts, and not nearly as much on call, but I'll find out when I talk to them. They have a pretty large fleet, I believe it's the biggest in the Puget Sound area at least, so they can probably afford to give their drivers adequate time off (according to FMCSA's SAFER website, they have 27 power units and 11 drivers as of last report).
And they've always had a pretty sharp looking fleet...