JMHO, but if you're so short on dual given hours that you need to include time in an FTD/AATD to become a DPE, you probably aren't qualified to be a DPE.

The only instruction that I would consider tracking is that in a full motion level C/D simulator in a part 142 environment. Even then, I probably wouldn't include it in my formal pilot logbook. (If you're that concerned about the time, get a second "FTD/SIM/ground instruction" logbook.