To me Hammerhead Bridge is basically a Port Mackerel with much needed verticality due to the grated walkways. It's possible to get spawn camped but still sort of hard to get to that point. It's super long, so beakons are great. The middle is so twisty turny, which allows for some excellent ambushing opportunities.
I think Kraken is pretty bad for Hammerhead Bridge. From my experience, most of the fighting is happening on the grates, and the grates are usually very easy to get to, so it's difficult to catch anyone with a Kraken. Also thanks to the grates, Splash Walls aren't as good; they can cover the upper floor or the lower floor, but not both.