I’m curious if there is a more elegant solution here, but in my experience there’s only so much mitigation you can do. If you mark up a button click, you’re going to get inflated numbers, if you mark up a thank you page, you’re going to get deflated numbers.

I would probably see if there’s a way to optimize based on your back end data rather than trying to do that.

That said, if you have to use one of the options above, I’d take the deflated data that way automatic bidding strategies won’t optimize for bad traffic, only good traffic. Of course, you’ll need to manually true up that data and do some speculation.