Something that would work much better is a weld washer such as this one:
https://www.amazon.com/RuffStuff-Specialties-Weld-Washers-Repair/dp/B0155QMZ5Q/
They're intended to be welded in for a situation such as this, or if your bolt holes are all chewed up.
Good suggestion, i will keep these in my repair "idea" basket. Am going to take another look tomorrow at the frame. Will report back later and much obliged to all who posted