Here's one from the Traeger site:

https://www.traegergrills.com/recipes/smoked-trout

I've found most of the recipes there to be great as far as the seasonings go, but almost every one of them will give you cinders
if you follow the time and temp recommendations. If I was going to do it I'd use the smoke setting (~165° on my T), or maybe
up to 180°, but I wouldn't go any higher than that.