yeah try to bait important cds, bring another body to confuse them on targeting, etc.
it confuses a lot of people since a lot of the time they get caught in the loop of oh tass shield is much more effective on his allies vs. oh I probably can't kill tass so I should hit the other guy vs. oh there's more targets and my brain is bad at processing that, plus it lets you zone harder with psi storm since you're dropping it in the middle of frontline and backline (and a lot of ppl have a hard time deciding whether they should just eat the psi-storm or run, it results in a funky dance they do sometimes it's kind of funny)
you dont really want to drop the shield on yourself in general but the cd is low and sometimes it messes w/ ppl that you're willing to do that, ppl who choose to focus you but see you shield yourself usually abandon that idea pretty quickly