or you could recount your stack right before displaying the tooltip with a Prehook "OnShow" ? what are the chances for the tooltip to be already on screen while the baits are depleted?

ZO_PreHook(yourtooltip, "OnShow", yourupdatefunc)

If your tooltip is personalized it would restrain the number of calls for sure.


(whoops forgot to say hi!)

actually it would be even savier do it on map display as you tried, but for that you should look at the SCENES functions, I can't tell exactly for this.