What is the Rosh Yeshiva’s position on toiveling keilim (immersing dishes) on Yom Tov?
Although I’m curious about the specific circumstances (e.g. where are you going to be tovel it? Why couldn’t you do it beforehand?), I think it is fine. See Shulchan Arukh OC 323:7 where the Shulchan Arukh rules that m’ikar ha’din (according to the basic halakha) it is permitted, and Rema implicitly agrees. While in Darkhei Moshe he rules that it is forbidden, and many Ashkenazi Achronim are strict