Sam - the 'in' lure of the moment is a pink siren stickbait. I've lived in the region a long time and I've never come across a shoal of baitfish looking anything like that
Daniel - Oman is the only place to go if you want to fish for GT's
Oceanactive run 2 boats out of Dibba to fish up towards the top of Mussandan in the north.
OA and No Boundaries fish the Halinayat Islands in the south (monster GT heaven)
Both places are quite remote, especially the islands in the south but I guess you're asking about the safety in Oman generally ? There was a little bit of unrest in Oman during the Arab Spring of last year but this is long forgotten.
There are charters operating out of Dubai (with the exception of Soolymans these seem to be more geared up to drag Rapalas around catching barracuda to please the tourists), Abu Dhabi and Fujairah. Fujairah is very good at times with dorado, tuna, sails and amberjack together with a few other species. There are reports of an occasional marlin but there are few people about with the time, money and patience to pursue these !