Joe funny you should bring this up yesterday I was working on the dueling mixes song lovers far apart and I don’t have a de-esser nor can I afford to purchase one. I saw a video where someone was actually going into the event or clip and isolating the sibilance and turning it down there.
It actually works pretty good and once you get the hang of it goes pretty quick. I posted this because i hear you and graham talk about limitations in the studio and it being a good thing. I should be able to post this on the share your mixes forum pretty soon.
Do you have a multi-band compressor? If so, you can create a de-esser. Here’s how: