This is not trying to link to a piece of text highlighted in yellow on Skim. If I highlight the text before turning it yellow, and after highlighting it, then I hook to it it works fine. After I hook to it I can then make it yellow like a regular highlight should look and the hook still works.
What I have also figured out is that the app Highlights is far more effective for me because I can get my highlights out of it in markdown. I can’t unfortunately hook using deep links.
I have reached out to the developer of Highlights and he said that because he is a one-man shop, blah blah blah. His app does not reflect the fact that he is only a one person shop. He is charging a premium price for it. As much as I like the app, I can see no reason that he can’t make this able to it do deep linking. I am letting my displeasure be known in my app review. It seems to be the only real way to get through.