Patch panel welding advice needed

[rgunlock]

I've been struggling for some time now to get patch panels welded in where I'm happy with the result. Not there yet. I think I did ok shaping the patch and getting it started. Fits pretty well and is going in flush. I'm taking my time and trying not to do too many welds at once to let the metal cool. This is actually one of my better patch jobs as I only have holes blown out around a couple of welds, and most welds straddle the crack.

This is where I usually get into trouble. After grinding most of the welds down, I try to put welds wherever there is a tiny hole or I see light through the crack. I generally end up with more burned out holes. Do you guys try to cover the entire edge of the patch with welds? Do you leave it more like in the 2nd picture and figure the seam sealer or filler will deal with the tiny spaces and holes? Looking for advice before I screw up this little project. Thanks!