"Quiet you!" Clint pulled at Arafel's scruff as the dog barked at the boat. His annoyance grew as the boat which was full of marines began to attack them. They were trying to bomb them with these birds with bombs on them. Luckily for him, at least he had a weapon for to hit the flying birds. Shells and feathers littered the wooden planks of the ship as he blasted at the birds with his shotgun. 

He watched as The Captain ordered Bakuto to spew flames are the marine ship only for the captain to slice away with a series of slashes.  Flint's eye narrowed as he realized that sword had seastone on it. The presence of that sword would no doubt inconvenience the handful of devil fruit afflicted crew members. And of course Alesia had to jump headfirst and fight against the captain. With his guardian instinct kicking in, he would follow her too.

Before he did that however, he'd reload a different type of shell into his gun and then take the leap into enemy ship. He pulled the triggers one by one. Each pull triggering a plume of fire. One aimed at the sails and the other aimed the captain. It wasn't as good as more conventional shot or slugs but it should do the work of what he wanted.  "Hey Cap, gotta be more careful. Be a shame to have you fall into the drink you know."