I did an ADF let down the other day as the airfield concerned had no other aids, my GPS was in the bag and the cloud was down to 900 feet. The instructor I was with made the call. I was a bit surprised as the field didn't have ATC so this was illegal.
I think you should be able to manage ADFs. If you can't it suggest there's a big hole in your general navigation. MS FS is a perfectly good way of getting back into practice.