Welcome to the forum, Lee!
You are right the topic about fishing
in Bahrain was created previously this year.
Despite Bahrain is a sea country there are not so many good fishing spots here.
Sitra bridge is one of the most popular spots of fishing. Sitra is an island east of Bahrain Island in Persian Gulf. It lies south of Manama and Nabih Saleh.
Khalifa bridge is also great place for fishing.
But I believe that the best solution is take a boat for fishing and go a few miles into the sea.
Below is an interesting tide table for fishers in Bahrain.
you can find more info here: http://www.tides4fishing.com/as/bahrain/bahrain