When I was heading to the "mostly terrible" spots I used for gaunting, I'd look at my pk list and see a few things:

1: Lots of warriors. You're never getting a warrior with a gaunt. Maybe one on the bottom of your range that is an elf or something.

2: Rager of any kind. Not happening if you didn't weaken them first and caught them outside eastern road (yeah right). Maybe a thief.

3: Anyone with friends. This means most fortress hugging their 5 friends.

I am probably missing some things since its been awhile, but basically I would look for bards, shapeshifters not in form (by checking via sight of the damned and draining my mana), thieves if I could see them, low range assassins, and invokers if I don't think they're wanded up.

However, the super scary spot can easily be worded from, or if you're like most of the people I gaunted successfully, you flee down on the first try and give me an aneurysm. The other spot is of course the sands of sorrow, which is just as much a bitch for me to navigate as you.