5 years ago we replaced the broken copper strap on Elyse using Bills diagram as a guide, but from 1/4" X 2" solid copper.
Followed the instructions with socket and extensions to get the old strap out.
Drilled and threaded holes for all the bonding wires.
Installed the bonding strap to the keel bolt.
Stripped the bonding wires back to bare copper, new lugs and bolted them to the copper strap.
5 years on looks as good as new.
AND no bonding issues.
Cheers
Alan
Elyse SM437