Fuel pressure stays constant. I think I just figured it out, I jacked the boat to an equivalent angle to simulate the boat ramp. Then was able to get the engine to stall on land. 

After getting it to stall, I pulled fuel with a manual pump direct from the tank supply outlet. I'm seeing a significant amount of water bubbles in the clear lines. 

I've drained all 22 gallons of fuel from the tank and filled it with five gallons of fresh fuel and STP water remover and re ran my on land tests. Not able to get it to stall again so I'll water test it later and follow up. Still going to change fuel lines as @justgarysuggested. 

Not counting chickens yet but I think I'm on a good path! Thanks guys! 

Josh

@justgary yes looks the same

Just realized I didn't add in the  things checked. Cannon Plug has been unplugged and pins inspected and spread slightly to help with good connection. All looks good there. No corrosion. Connection seems tight. All wires in harness seem good. No damage or problem wires anywhere that I can see.

Jfletcher011,

Well, that is quite story and as of yet not sure if problem is 100% corrected. the mechanic i had come isolated engine from Gauges with harness he has made and ran boat with it attached to his computer to see if problem was with engine side or possibly with dash side. Turns out same problem occurred. So he thought he had it narrowed down to engine management side only. He first replaced the Ignition control module in Distributor. Ran it for about 20 min and it was fine. Then did same thing and he started checking other components. After lots or research and even calls to Indmar he and I narrowed it down to the Pickup coil down inside the Distributor. So he replaced that and ran for 20-30 min without any stalling or ignition beeps. So thought all was good. Took it out to lake and it ran great no problems for about 1 hr runnning. then when running back to harbor it did same thing once. then not again. went out second time about 2weeks later and it did same thing once exiting harbor but not again the rest of the time. that was was all last fall. Just had it out once this spring on Memorial day and no problems. But it did stall and beep once on hose when I was de winterizing. So really not sure what problem is. Have now pretty much eliminated all ignition components as they have been replaced. My mechanic called OBD diagnostics in Redondo beach CA. They specialize in these MEFI Fuel injection systems and he thought it may be the ECM, But not Sure. So still kinda chasing this. All components replaced to date: ICM, Pickup coil, Spark plugs, Distributor cap, rotor, Plug wires, Ignition coil, Fuel filter, 50 amp circuit breaker on engine, Oil pressure switch for ecm and sender for gauge.  Systems checked: Ignition switch, Safety switch with lanyard, all ground connections, Starter and ignition side from solenoid, Fuel pressure on key up and running, Ignition and Fuel pump Relays. I have not ran it since I changed the 50 Amp Circuit breaker so that still has to seen if any changes. Hope this helps. If you find anything please let me know. Maybe together we can find the problem and the fix. At this point if the circuit breaker didn't fix it I think I may have to send my ECM to ODB diagnostics and have them test it. Good luck! Keep me posted. Thanks Kerry

1 hour ago, JoeBuck said:

@justgarywould this work on a 08 V-ride with the Morse throttle assembly? Looking for a new one as the original is in rough shape. My assembly is identical to the photos above where they bought a new ball and it didn’t fit for the 09. I would be interested in one of these in black if it would fit. 

It should work if your knob looks like this:

@DBPEteacher should get his on Monday.  Hopefully he will come back here and give feedback about what he likes and doesn't like.