I have been lucky to have a welder for a brother. He welded the inside of the booms on P&H cranes for several years under military contract, welded lift arms on John Deere Buldozers, and welded up broken snow plows for the Iowa DOT. He was certified to 3 1/2 inches thick.
When a storm dropped a big oak tree on a pavilion I had under my pervue I hired a certified welder to make the roof beams “better than new”
The equipment repair shops in our farm country welding on half million dollar combines and big tractors are good too. That’s where I had the fish plates welded on thw 2010
Escape frame.
My brother was a little hesitant to work around
fiberglass
Iowa Dave