During my childhood he worked full-time doing steel erection for his cousin's company in Baltimore, but he has always worked for himself too at a practically full-time pace on the side.
He's also an electrician, and for a long time he built drag racing cars at our house fabricating roll-cages and adding rigidity etc, but sometimes doing the full chassis and assembling them. He wired about half as many too.
But he got out of building the cars a long while back, not sure why honestly.
Now he does a little of everything, but mostly it's small work in the shop and most of it happens on sites.
He's always wanted to have a gig where he'd get to do most of the work in the shop again like the cars, and that's why I was thinking he should look into the ATV world.

At the end of the day though, a lot of the game is about who you know. The networking is key. It's not marketing that gets you the most business at least that's what I've seen while working with my father on the side. He's always known a lot of people so that's been key in him working for himself as his main gig. Obviously being able to do good work is just as important.

We were actually thinking about getting a CNC plasma cutter for producing decorative signs and stuff. One of the smaller ones that isn't crazy money. I'm decent with 2D design so I would be handling the CAD/software side, and in that situation we'd be selling online. But I think you could also market custom fab ATV parts online too.