2007 Ski Nautique stalled and stopped

After 2 hours of skiing I was driving at 5-8 mph back to the dock and the engine chugged and stalled. It restarted, but might have been missing a bit (or I was overly sensitive). Temp was ok. 3/8 full of fuel. One guest "smelled fuel" but no one else did. No problems pulling up skiers this outing, but 4 weeks ago I had one episode of lag/low power when picking up a skier. Resolved and didn't recur. 290 hours on the engine. I have since started and run the engine at idle at the dock with no problems. I've had the boat 2 years. No fuel filter change. Oil and oil filter changed at 265 hours 3 months ago. Boat is used in inland salt water in Southern California, stored on a lift, and flushed after each use. Any suggestions about what to check for or what I might be dealing with? Thanks!

Thank you. My skill set is low to medium (I changed out the starter and did the oil change myself). Is it complicated to change fuel filters? Didn't know there was more than one! I don't know how to check "fuel rail pressure." I'm willing to learn, so long as there is a low chance of wrecking something.

Showing itself at low speed it's possible you have a drippy injector or two - I would run a few tanks of fuel injector cleaner through it in addition to the above suggestions.