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Hello Britton. My name is Tan.
Try running the engine on a different fuel source. Disconnect the fuel line at the engine coming from the fuel tank plug the line.Then with a gas can and a short piece of hose connect the hose to the engine. Secure the gas can. Run the boat does it run better?
You symptoms are of fuel starvation this could be debris in the fuel tank, clogged or kinked vent line, failing anti siphon valve or a bad fuel supply line.
We have to separate the engine from the boat side fuel system. This way we know if you have fuel supply issue or an engine issue.
Does this make sense?
Did you do the test as I outlined?
Different fuel tank?