As the rows get longer (this pattern starts from a 5 stitch row and expands every row thereafter to create large triangle), the prospect of ripping back one or more rows is getting more unattractive, and so I have been trying to make repairs where I can. After the umpteenth repair where I just kind of bumbled along adding/deleting stitches somewhat randomly to make the stitch count match, I've started really looking at the pattern after every right side row, marking where the mistake is with a safety pin, then fixing on the wrong side row (all purl stitches).
I finally hit on the bright idea of photographing what the correct stitch should look like in order to recreate it from the wrong side (WS) row. Above is what a correct yarn over looks like just before purling on the WS row.
this is how the pattern looks after correcting the yarn over and purling through. I cannot express how happy I was to catch the mistake and actually fix it so it looks perfect! I am finding this pattern pretty addictive, it's kind of fun to do the pattern correctly, but even more compelling is if I do find a mistake I feel like I have to complete at least 1 more row in order to fix it before I forget there was a mistake.