Hi Dave & Scott - spent most of the weekend at our local pub, drinking beer and watching football and Formula 1 - so didn't sign on to the forum until now!
Glad to read your posts because I suspected that what the guys in Musandam call Kingfish or King Mackerel are similar/same species as what you guys call Spanish Mackerel (being fairly new to this type of fishing and living in England, I had only previously seen these fish on Rex Hunt TV shows!).
Just to clear up a point re the fish in the pic I posted, it was taken on a Wahoo stickbait not a popper, though it did take only an inch or two below the surface because that's how we fish them. We did see other Kings almost as big as this launching themselves vertically at our stickbaits, one or two of them biting through our leaders at the same time. One memorable fish must have jumped 8 feet clear of the water striking at my stickbait - but it missed the lure and the leader completely on the way up and on the way down!
Those teeth do leave some serious marks on the lures but I have been really impressed with the durability of Wahoo stickbaits and GT Mania poppers. Both types of lure have come through major collisions with sizeable Kingfish and GT and occasional mis-timed casts into cliff faces, coming back battered but not destroyed.
Off to the Seychelles early December to see what we can pop and jig there.