Even though the TIRE theme - eight circled Os representing a bad thing to blow - one of the many! - left me a little flat, I did think there were some zippy clues for some airless old answers like 64A. Soothing succulents (ALOES), 51A. Busy bee in Apr. (CPA), and 69A. Some whistle blowers (REFS).
On the other hand, I was pumped about JILT (9A), ZESTS (3D) - despite the pesky pluralizing - and TESLACOIL, which just sounds cool to me.
Did anyone else watch Bonanza back in the day? 37D reminded me of an episode in which Hoss is out looking for leprechauns and Little Joe sneaks up on him. There are a lot of YOOHOOS in the scene. A Bonanza of Yoohoos
Other good grid grist: EFFIGY, TROPE, MOLT, MANGY, SETTO, TOR, COOT, and INANE.
Oh yes, and I'm boffo for BOZO! And Doofus for that matter (1A). :) I give it an APLUS.