How much to disclose at Annual?

“disclose” implies you want to hide something. You certainly don’t want to hide anything that could affect your safety.

What I do is take the plane to my mechanic (a 10-minute flight) along with a written page of squawks. That list is anything I want corrected, whether it’s vital or not. I also verify which ADs need to be addressed. He takes it from there. He keeps track of all ADs and log books.

Sometimes I’ll want something done that isn’t critical to safety and he’ll let me know if it’s going to be expensive to make sure I want it done despite the cost.

I think a good relationship with your mechanic is important.