What Type of Fishing Line
Mono is fine, but many anglers use braid. You will want to use a flourocarbon leader too.
What Pound Test
30 to 40 pound test line is fine for most situations, but you can go heavier, especially if fishing around the bridges. In open water, 30 to 40 pound test will be just fine, but some anglers do go very heavy with a small diameter line like a super line or a braided line. A long 80 to 100 pound fluorocarbon leader will be needed as well.
For Baby Tarpon
If you are targeting smaller tarpon in the backwaters, you can get away with lighter line. 20 to 30 pound line with a 50 pound fluorocarbon leader will be fine for most situations.