I realize this is a super-rare occurrence for Summoners, but I've had cases in Low-Level Roulette where

a) I or Garuda have derped and unintentionally pulled a mob that the party decided to pass by. For the record, I DO run to the tank with the mob tailing me, until the moment when or if the tank tries to take the mob off me.

b) Tank drops and we waste time twiddling thumbs until I ask if I should get Titan out.

In situation a, I certainly appreciate the tanks that are generous enough to take the mob off of me even though the party had no intention of wasting even more time with it to start with. But I've had one instance where the tank just wouldn't. I'm going to give him the benefit here and say he just tunnel-visioned, considering he finally picked it up around half-health, but I made a decision to Swiftcast Titan out until he got him.

In situation b, well, I made the offer and realized I really just could not control Titan real well. I realize Titan certainly doesn't beat having an actual TANK show up, but I just thought it'd beat sitting around... right?

Anyway, is there any advice I could get regarding pulling mobs, having him at least hold more than one the best he can, and not pulling every other mob in the area in the process? OR, am I actually better off dance-spamming with the others until a tank shows up or the duty abandons? And likewise, what advice could I get on the first situation?