Not sure if it is poor tools, lack of knowledge, or lack of skill ... but I can't cut sheet metal by hand without butchering it.
To cut my corrugated metal roof, I used a circular saw. I doubt it was the best way to do it, but it worked for me.
I never could have mixed up my Black Jack 57 properly had I not bought one of these:
https://www.amazon.com/gp/product/B01N6U1M8Y/
But if I were to do it again, I'd save some money and gone for the one at Harbor Freight:
https://www.harborfreight.com/long-mixing-paddle-97357.html
Harbor Freight's 18 in. Bolt Cutters for $12.99 have been super helpful in cutting cattle panel.
https://www.harborfreight.com/18-in-bolt-cutters-60683.html
One of those seamers sure would have been handy. I used a 4' level and worked by hand ... not bad, but that looks like it would have been easier. I'm almost done, so it's too late to go buying something now.