https://extensions.sketchup.com/extension/16cd999d-050e-4910-b0a4-699f83decd75/eneroth-auto-weld
Another weld plugin? Yup, but this one has some unique features.
This plugin doesn't just weld the selected edges together but searches for edges that can be welded and weld them all at once. The search is limited to the selection if there is one, otherwise all edges in the current drawing context are checked.
The plugin also automatically look for edges to weld whenever Follow Me Tool has been used. This means you wont have to deal with all the exploded curves each time you use the tool.
Lastly the plugin forms proper arcs and circles whenever possible, not just generic curves, which among other things allows you to see the radius in Entity Info.
Activated from Extensions > Eneroth Auto Weld > Weld or Toolbar.