Do you like paint-by-numbers/griddlers/nonograms/pic-a-pix? I do, so I made one for you as well. Solve the grid, get the coordinates. After several test-solves, I got this down to an hour ten minutes by hand. I think I'm pretty fast at these things, so it will probably take you longer, hence the higher D rating. I might change the rating depending on feedback from solvers.
PDF Download at Google Drive
Download the puzzle and print it. Please use a PDF viewer to open the file; if you use Google Docs, it will just give you a pageful of numbers, without the grid or any formatting.
You can validate your puzzle solution with certitude.
I was very glad to find an Excel spreadsheet to use at a template in GC18783 Thorny Logic. That made it a lot easier for me to set the puzzle, make corrections, and have an easy-to-present format.