I'm working on uplighting for the second story and would also like to light the retaining wall. The issue is that I don't have even half an inch of lip on the caps for the wall so I'm not able to use the traditional hardscape lights here. Does anyone have any other recommendations? I was thinking 3 well lights spaced out evenly around the diameter. Not sure which ones to go with or if it will even work since there's a bit of a slope. Appreciate any insight you might have.