300xs dies while idling randomly.

[288sunny]

2007 300xs 25” shaft. 1E002730
2007 300xs, idles on the hose fine, no issues, let it idle a bit on trailer, no issues, but idling out of marina channel it’s died once, but ran great after pumping primer bulb a bunch. Then idle a good bit with no issues, so thought we were good. Today idled out, ran great. Parked a bit, had lunch, etc. idling back out, it died. Pumped primer bulb a ton, fired up and ran 3800 all the way home, and then idled back to marina with no issues. Not sure why the “random” dying is happening but fires up after pumping fuel primer and runs fine after. I’m going to replace both primer bulbs as I don’t know how old they are. Any other thoughts/advice to look at. No codes or faults showing. Engine has good compression, good fuel/air pressure

[Savage]

Pulse pump need checked/rebuilt.
Vacuum leaks in the fuel line from improper hose clamps.
Fuel tank in not venting properly.
Fuel lines are coming apart internally.